For some VPS or server, they dont have the native IPv6 connectivity and have to rely on the 6-in-4 tunnel (eg HE IPV6 tunnel). In this case, the IPv6 connectivity is not available on eth0, rather, it is on the interface like he-ipv6.
In the custom mode, it is suggested that users should be able to choose the interface for IPv6 connection.
OS: Ubuntu 18.04 OpenVPN 2.4.4
For some VPS or server, they dont have the native IPv6 connectivity and have to rely on the 6-in-4 tunnel (eg HE IPV6 tunnel). In this case, the IPv6 connectivity is not available on
eth0
, rather, it is on the interface likehe-ipv6
. In the custom mode, it is suggested that users should be able to choose the interface for IPv6 connection.