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Hummingbird 1.1.0 released

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Posted ... (edited)

Hi, 


Just configured Hummingbird on Ubuntu. Is there a way to make it run like a daemon or configure the connection so it connects automatically after reboots? Thank-you!

Edited ... by armistise

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13 minutes ago, armistise said:

Just configured Hummingbird on Ubuntu. Is there a way to make it run like a daemon or configure the connection so it connects automatically after reboots? Thank-you!

 

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I have a problem with hummingbird on Fedora33, again.

I have got a power down (desktop) while humminbirg connection was on. Now I have no way to restore any connection.

--recover-network returns 
 

Hummingbird - AirVPN OpenVPN 3 Client 1.1.0 - 23 June 2020 

It seems this program has properly exited in its last run and
it has already restored network settings on exit.

ERROR: Backup copy of resolv.conf not found.
ERROR: Backup copy of network filter not found.

Also, I do not see any lock file in etc/airvpn (this is correct, though because my internet connection without VPN is active and working).

So basically I have no way to use hummingbird, any longer.

 

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@misam

Excellent, thank you, bug detected, it will be fixed! ✌️

You should be able to start Hummingbird. If not, please read on.

You will need to delete some files manually. If deletion is necessary, before you delete please let us know the directory content:
 
ls -l /etc/airvpn

Finally:
 
sudo rm etc/airvpn/hummigbird.lock /etc/airvpn/resolv.conf.airvpnbackup /etc/airvpn/systemdns.airvpnbackup

Then start Hummingbird and check whether everything is fine again.

We are looking forward to hearing from you.

Kind regards
 

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1 hour ago, Staff said:


@misam
 

ls -l /etc/airvpn


 

This is the command output:
 
total 0 
-rw-r--r--. 1 root root 0 Dec 24 00:09 ip6tables-save.txt




 

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On 11/23/2020 at 6:29 PM, armistise said:

Hi, 


Just configured Hummingbird on Ubuntu. Is there a way to make it run like a daemon or configure the connection so it connects automatically after reboots? Thank-you!


Hello!

You can now do that with Bluetit. Configuring Bluetit to connect during system bootstrap is a straightforward, very simple procedure, Furthermore, you will run a real daemon, and not a user process, therefore you have a higher security level. Bluetit can start and connect during bootstrap of both systemd and SysV-style init based systems.

https://airvpn.org/forums/topic/48833-linux-airvpn-suite-100-released/

Kind regards
 

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On 8/9/2020 at 8:59 AM, Maggie144 said:

I noticed some new lines in log - the connection was not disturbed, ipleak.net confirms no leaks - just curious what that is about

Sun Aug  9 07:58:07.153 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 07:58:07.154 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 07:58:07.154 2020 Comp-stub init swap=0
Sun Aug  9 07:59:50.346 2020 UDP send exception: send: No buffer space available
Sun Aug  9 07:59:50.346 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:11:47.524 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:11:47.524 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:11:47.626 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:11:47.626 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:14:46.964 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 08:14:46.965 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 08:14:47.061 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 08:14:47.061 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 08:14:47.379 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 08:14:47.380 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 08:14:47.380 2020 Comp-stub init swap=0
Sun Aug  9 08:31:26.808 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 08:31:26.808 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 08:31:26.892 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 08:31:26.893 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 08:31:27.350 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 08:31:27.350 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 08:31:27.350 2020 Comp-stub init swap=0
Sun Aug  9 08:48:06.900 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 08:48:06.901 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 08:48:06.977 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 08:48:06.977 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 08:48:07.233 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 08:48:07.233 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 08:48:07.233 2020 Comp-stub init swap=0
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.629 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.629 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.629 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.629 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.629 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.629 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:52:06.630 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:52:06.630 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 08:58:37.731 2020 UDP send exception: send: No buffer space available
Sun Aug  9 08:58:37.731 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:00:58.218 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:00:58.218 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:00:58.219 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:00:58.219 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:00:58.219 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:00:58.219 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:00:58.219 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:00:58.219 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:00:58.219 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:00:58.219 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:04:46.839 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 09:04:46.839 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 09:04:46.915 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 09:04:46.915 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 09:04:47.231 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 09:04:47.232 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 09:04:47.232 2020 Comp-stub init swap=0
Sun Aug  9 09:15:02.312 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:15:02.312 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:15:02.312 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:15:02.312 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:21:26.809 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 09:21:26.809 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 09:21:26.884 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 09:21:26.884 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 09:21:27.231 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 09:21:27.232 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 09:21:27.232 2020 Comp-stub init swap=0
Sun Aug  9 09:31:28.992 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.992 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.992 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.992 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.992 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.992 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.992 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.992 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.993 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.993 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.993 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.993 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.993 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.994 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.994 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.995 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.995 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.996 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.996 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.996 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.996 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:31:28.996 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:31:28.996 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.671 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.671 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.672 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.672 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:34:57.673 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:34:57.673 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:06.820 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 09:38:06.820 2020 Peer Info:
IV_VER=3.6.4 AirVPN
IV_PLAT=mac
IV_NCP=2
IV_TCPNL=1
IV_PROTO=2
IV_CIPHERS=AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305
IV_LZO_STUB=1
IV_COMP_STUB=1
IV_COMP_STUBv2=1
UV_IPV6=yes
IV_GUI_VER=Hummingbird - AirVPN OpenVPN 3 Client 1.1.0
IV_HWADDR=18:65:90:d6:c1:dd
IV_SSL=mbed TLS 2.16.6

Sun Aug  9 09:38:06.901 2020 VERIFY OK : depth=1
cert. version     : 3
serial number     : 8C:D8:43:EF:E4:5F:20:03
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
issued  on        : 2014-04-11 10:15:45
expires on        : 2024-04-08 10:15:45
signed using      : RSA with SHA1
RSA key size      : 4096 bits
basic constraints : CA=true

Sun Aug  9 09:38:06.901 2020 VERIFY OK : depth=0
cert. version     : 3
serial number     : 01:30
issuer name       : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
subject name      : C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Achernar, emailAddress=info@airvpn.org
issued  on        : 2016-12-28 14:55:42
expires on        : 2026-12-26 14:55:42
signed using      : RSA with SHA-512
RSA key size      : 4096 bits
basic constraints : CA=false
cert. type        : SSL Server
key usage         : Digital Signature, Key Encipherment
ext key usage     : TLS Web Server Authentication

Sun Aug  9 09:38:07.181 2020 SSL Handshake: TLSv1.2/TLS-DHE-RSA-WITH-AES-256-GCM-SHA384
Sun Aug  9 09:38:07.181 2020 LZO-ASYM init swap=0 asym=1
Sun Aug  9 09:38:07.182 2020 Comp-stub init swap=0
Sun Aug  9 09:38:59.764 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.764 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.765 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.765 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.765 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.765 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.766 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.766 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.766 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.766 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.767 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.767 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.768 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.768 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.768 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.768 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.768 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.768 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.769 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.769 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.769 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.769 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.769 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.769 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.770 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.770 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.770 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.770 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.770 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.771 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.771 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.771 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.772 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.772 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.772 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.772 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.772 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.772 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.773 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.773 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.773 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.773 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.773 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.773 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.774 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.774 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.774 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.774 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.774 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.774 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.774 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.775 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.775 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.775 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.775 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.775 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.775 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:38:59.775 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:38:59.775 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.046 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.046 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.046 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.046 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.047 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.047 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:46:59.048 2020 UDP send exception: send: No buffer space available
Sun Aug  9 09:46:59.048 2020 ERROR: NETWORK_SEND_ERROR
Sun Aug  9 09:54:46.810 2020 Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client
Sun Aug  9 09:54:46.810 2020 Peer Info:
 



I'm noticing a similar issue to Maggie144, using Hummingbird with Eddie on macOS. In my case the connection is indeed disturbed - it happened while I was on a video call, the call would freeze for a couple seconds and then hundreds of "no buffer space available" messages would appear. Then it happened again just once today after I opened a torrent app. I'm attaching the last 1000 lines of the Eddie log in case that helps.

Eddie_20210221_141337.txt

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On 2/21/2021 at 3:30 PM, Staff said:
@Agrock

Hello!

For the error description:
https://developer.apple.com/forums/thread/42334

Of course, knowing what it means does not tell us why the kernel runs out of memory while OVPN 3 is over UDP and why only in macOS. We will keep an eye on it. How frequently do you have this problem?

Kind regards
 

Very interesting, thank you for the explainer. I'd say it happens every half-hour or so when under constant load - not a dealbreaker for personal use really, but it can get a bit annoying.

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On 2/21/2021 at 4:30 PM, Staff said:
@Agrock

Hello!

For the error description:
https://developer.apple.com/forums/thread/42334

Of course, knowing what it means does not tell us why the kernel runs out of memory while OVPN 3 is over UDP and why only in macOS. We will keep an eye on it. How frequently do you have this problem?

I would like to piggyback on this problem (I know this post is a little dated already), but to be honest, this "issue" still exists on the very latest macOS (Monterey, 12.1 as of this writing and Hummbird 1.1.2 - even though from what you wrote it seemed to be fully related to macOS and unrelated to Hummbingbird (or even OpenVPN) at all.

I do still get occasionally the same error in the Terminal:

Wed Jan 19 16:42:48.044 2022 ERROR: NETWORK_SEND_ERROR
Wed Jan 19 16:42:48.044 2022 UDP send exception: send: No buffer space available

It does not seem to affect the overall connection, but after closing the connection with Hummingbird, I notice that sometimes this error is thrown more than  a hundred thousand times (!) during the session:

Wed Jan 19 16:50:20.589 2022 Network filter successfully restored
Wed Jan 19 16:50:20.589 2022 Thread finished
STATS:
...
NETWORK_SEND_ERROR : 113666

Just wondering: did you ever find out anything new to this error? I saw this error (or is it more a "Warning" ?) already on Big Sur and was hoping it would vanish under Monterey, but it's still there. Can you confirm that from a user perspective, these messages in the Log can simply be ignored?
 

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2 hours ago, spinmaster said:
Just wondering: did you ever find out anything new to this error? I saw this error (or is it more a "Warning" ?) already on Big Sur and was hoping it would vanish under Monterey, but it's still there. Can you confirm that from a user perspective, these messages in the Log can simply be ignored?

Hello!

No news, we're sorry, but let's evaluate whether the default buffer size of the UDP/IP stack is insufficient for OpenVPN3-AirVPN needs. Can you please give us the output (from a terminal) of the command:
sysctl kern.ipc.maxsockbuf
It will show the buffer size in bytes. We would like to compare it with our systems (Big Sur and Catalina, M1 and x86-64) where the problem doesn't occur, and check whether increasing the buffer mitigates it.

Kind regards
 

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3 hours ago, Staff said:

Can you please give us the output (from a terminal) of the command:

sysctl kern.ipc.maxsockbuf

Sure, it's 8MB (kern.ipc.maxsockbuf: 8388608). My full specs are:

MacBook Air M1 / Apple Silicone, macOS Monterey 12.1; Hummingbird 1.1.2, OpenVPN Config File with AES Cipher. I have seen this on both UDP (and I think more rarely) on TCP connections too.

As mentioned before (and from others users), it seems like it happens randomly. I only get it on some days, sometimes more often, sometimes not at all. Maybe the 8MB threshold is reached after a certain amount of connections (within a single macOS session before reboot) and then this error/warning is thrown. On some days I reconnect >15 times to get a new Outbound IP.

Happy to increase the 8MB default value and monitor if this will mitigate it. Any idea what could cause this "overflow" of the 8MB? Does this value differ on your machines on Big Sur or Catalina?

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@spinmaster

Hello!

Our testing systems have 8 MB buffer as well. We are still struggling to reproduce the problem. In the meantime, please test with a 32 MB buffer, for example:
sudo sysctl -w kern.ipc.maxsockbuf=33554432

Kind regards
 

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19 hours ago, Staff said:
 

sysctl kern.ipc.maxsockbuf

 

Hello @Staff , I tried running this command in Monterey 12.1 and I got 
sysctl: unknown oid 'kern.ipc.maxsockbuf'

and I tried this command Also :

 
sudo sysctl -w kern.ipc.maxsockbuf=33554432
and I got this :
sysctl: kern.ipc.maxsockbuf=33554432: Result too large
any ideas ? maybe try smaller buffer ?

Edit : I tried 
 sudo sysctl -w kern.ipc.maxsockbuf=16554432
and I got
kern.ipc.maxsockbuf: 8388608 -> 16554432
it's seems that 16mb was accepted unlike the 32

I'll test and report back.
 

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3 hours ago, Staff said:
@spinmaster

Our testing systems have 8 MB buffer as well. We are still struggling to reproduce the problem. In the meantime, please test with a 32 MB buffer, for example:

sudo sysctl -w kern.ipc.maxsockbuf=33554432

Hmm, it seems I cannot increase this value, getting the following response:
sysctl: kern.ipc.maxsockbuf=33554432: Result too large
I even tried a bit lower value (16 MB), but even this seems too large:
spinmaster@MacBook AirVPN % sudo sysctl -w kern.ipc.maxsockbuf=16777216
kern.ipc.maxsockbuf: 8388608
sysctl: kern.ipc.maxsockbuf=16777216: Result too large

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After upgrading to MacOS Monterey, I can't get hummingbird to run. If i run normally, it says to run with `--recover-network`; if i run with `--recover-network`, it says everything is good to go. I've tried removing the lock file, to no effect. Not sure how to find logs, but in the attached screenshot you can see the results. Is there some other step to recover? Problem might have been caused by having hummingbird running during the upgrade process.
 

Screen Shot 2022-01-21 at 1.38.58 PM.png

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@hartfieldsbane

Hello!

Can you please check the content of directory /etc/airvpn and post here?
sudo ls /etc/airvpn

A plausible explanation of the wrong behavior is that the lock file doesn't exist in /etc/airvpn, while some backup file related to firewall rules or DNS settings does. EDIT: bug confirmed, we will work to fix it.

You can resolve immediately the problem by deleting the whole directory content, but first please publish its content to let us check and reproduce the issue, thank you! A bug causing a similar problem was already detected by @misam in this thread in late 2020. It was fixed in your version 1.1.2, but maybe something is still wrong. Please post text and not screenshots when possible.

 
sudo rm /etc/airvpn/*
Kind regards
 

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Hello again

Regarding the UDP buffer space error on MacOS , increasing the buffer size from 8MB to 16MB made so much improvement the error is still appearing but much less than before , for setting a bigger buffer size than 16MB the kern.ipc.nmbclusters must be increased before , but the problem it's read only , and I tried nvram boot-args="ncl=262144" but checking kern.ipc.nmbclusters: 131072 so I still can't figure how to sort this out but it seems increasing the buffer size is a workaround/solution .

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Posted ... (edited)
On 1/22/2022 at 1:37 AM, Staff said:
@hartfieldsbane

Hello!

Can you please check the content of directory /etc/airvpn and post here?

sudo ls /etc/airvpn

A plausible explanation of the wrong behavior is that the lock file doesn't exist in /etc/airvpn, while some backup file related to firewall rules or DNS settings does. EDIT: bug confirmed, we will work to fix it.

You can resolve immediately the problem by deleting the whole directory content, but first please publish its content to let us check and reproduce the issue, thank you! A bug causing a similar problem was already detected by @misam in this thread in late 2020. It was fixed in your version 1.1.2, but maybe something is still wrong. Please post text and not screenshots when possible.


 

sudo rm /etc/airvpn/*
Kind regards


 

This was indeed the issue; after removing the pf-save.txt file (attached), have no issues. Thanks!
 
❯ tree /etc/airvpn/
/etc/airvpn/
└── pf-save.txt

0 directories, 1 file
pf-save.txt attached.
 

pf-save.txt

Screen Shot 2022-01-24 at 11.22.21 AM.png

Edited ... by hartfieldsbane

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On 1/22/2022 at 9:37 PM, tiger83052 said:

Hello again

Regarding the UDP buffer space error on MacOS , increasing the buffer size from 8MB to 16MB made so much improvement the error is still appearing but much less than before , for setting a bigger buffer size than 16MB the kern.ipc.nmbclusters must be increased before , but the problem it's read only , and I tried nvram boot-args="ncl=262144" but checking kern.ipc.nmbclusters: 131072 so I still can't figure how to sort this out but it seems increasing the buffer size is a workaround/solution .


Hello!

If you still need to increase the UDP buffer size beyond  please see here:
http://slaptijack.com/system-administration/mac-os-x-tcp-performance-tuning/

The article pertains to TCP but the principle is identical. By increasing mbuf clusters through setting ncl boot argument via nvram, you will be able to increase kern.ipc.maxsockbuf value after the bootstrap. So, if you need more buffer room to avoid the mentioned errors, you can have it. Maximum software buffer in bytes should be ~ (1/16) * ncl (each cluster is 2048 bytes). Remember to run nvram with root privileges and reboot to apply boot argument change. Please, we kindly ask you to keep us informed.

Kind regards
 

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