IPv6 test not reachable. (error) when visiting ipleak.net

[cybertrapped 0]

Hello,

I keep getting "IPv6 test not reachable. (error)" when I visit ipleak.net 

Meanwhile, I recorded a net-export log and I can see entries like the one below:
 

2295: UDP_SOCKET
[2001:4860:4860::8888]:53
Start Time: 2023-06-17 18:02:57.293

t=41784 [st=0] +SOCKET_ALIVE  [dt=0]
                --> source_dependency = 2294 (SSL_CONNECT_JOB)
t=41784 [st=0]    UDP_CONNECT  [dt=0]
                  --> address = "[2001:4860:4860::8888]:53"
t=41784 [st=0]    UDP_LOCAL_ADDRESS
                  --> address = "[fe80::daec:5eff:feea:d9a5]:33733"
t=41784 [st=0] -SOCKET_ALIVE

ARIN's information for 2001:4860:4860::8888
 

Network: NET6-2001-4860-1
Source Registry ARIN
Net Range 2001:4860:: - 2001:4860:ffff:ffff:ffff:ffff:ffff:ffff
CIDR 2001:4860::/32
Name GOOGLE-IPV6
Handle NET6-2001-4860-1
Parent NET6-2001-4800-0
Net Type DIRECT ALLOCATION
Origin AS AS15169

Could I get some feedback as to why I get IPv6 test not reachable. (error) when I check IP leaking through your ipleak.net service?

Thanx

[OpenSourcerer 1435]

Does it also not work with other tests? Can you reach ipv6.nsupdate.info/myip?