Hi there,
I’m using Mailcow on a host which has two IPv4 and IPv6 addresses for different services - Mailcow has its own dedicated IPv4 and IPv6 addresses for the mail server, and other services run on the other default host IP. This configuration has been working well for years.
I’m using the com.docker.network.bridge.host_binding_ipv4 setting to Docker to select the IPv4 address, and the docker ipv6nat container provides a similar com.docker.network.bridge.host_binding_ipv6 setting (see robbertkl/docker-ipv6natblob/master/README.md?plain=1#L144 ).
However, Docker’s native IPv6 NAT doesn’t seem to provide such an option so I’ve been refusing the offer from upgrade.sh to switch to it. Does anyone know how/if I can stop using docker-ipv6nat and still configure which IPv6 address is used for listening and outbound connections?
Thanks,
Rob