Today afternoon my default vpn tunnel at linux crashed. I can not reconnect it with my default config. I changed nothing in my debian box. Anyone else got this ? All IPv6 support is disabled at my system. vpn over ssl still working EDIT:  OK saw the Push message from server: Wed May  2 17:33:52 2018 PUSH: Received control message: 'PUSH_REPLY,comp-lzo no,redirect-gateway ipv6 def1 bypass-dhcp,dhcp-option DNS 10.17.0.1,dhcp-option DNS6 fde6:7a:7d20:17::1,tun-ipv6,route-gateway 10.17.0.1,topology