Bug#487525: avahi-daemon: Please disable IPv6 in the config file again

[Fabian Greffrath]

> Avahi in Debian should *not* be enabling IPv6 support by default.

I can only second upstream's request to disable IPv6 support in avahi.

As soon as I enable sharing the ~/Public folder via gnome-user-share, my
computer appears in epiphany's "near sites" bookmarks menu, but with its
IPv6 address which epiphany isn't even able to handle, see #487525.

 - Fabian