OpenVPN Support Forum

I'm working on an ipv6-only openvpn setup. I have it working, but if I enable keepalive no traffic is sent, and the clients keep doing ping-reset.

If I reconfigure to use ipv4 and proto udp, I can see the keepalive messages and the clients stay up.

Is keepalive incompatible with proto udp6?

Is there a workable alternative for ipv6, or do I have to roll my own mechanism?

HiroProtagonist wrote:Is keepalive incompatible with proto udp6?

Good question .. and possibly one of the reasons for this point in the wiki:

OpenVPN Wiki wrote:A few things must be met in order to use IPv6:

• An existing and functional OpenVPN configuration

Which means an existing and functional IPv4 Tunnel ..

See: https://community.openvpn.net/openvpn/wiki/IPv6

In time this will probably change, possibly with the next major release.
Alternatively you could try yourself by using the current git-master version.

TinCanTech wrote:

• An existing and functional OpenVPN configuration

Which means an existing and functional IPv4 Tunnel ..

See: https://community.openvpn.net/openvpn/wiki/IPv6[/quote]

Yes I've seen that. Nevertheless an IPv6-only solution is possible, and if an IPv4 tunnel is a pre-requisite, what's the point of proto udp6?

HiroProtagonist wrote:Is keepalive incompatible with proto udp6?

I do not see --ping6, --ping6-restart or --keep6alive .. may be that is why you currently need an IPv4 tunnel ..