Comment 12 for bug 313218

The are other problems too with forcing ipv6 enabled for everyone.
Some apps arn't prepared well and totally drop ip4 connectivity.

In the short time since the change to build-in ipv6 I had already vino-server (Bug #196675) and gobby (Bug #313393) fail me. I'm sure there are more waiting in the repos.

It's a good thing to bring these issues to light now, but I wouldn't hold my breath for having all of them fixed until release day. There is a real need for beeing able to turn ipv6 off completely and so far there appears to no other reliable way besides having it build as a module.