the gdm 2.6.0.6 and prob all before it are missing ipv6 support which just requires adding a --enable-ipv6 line attached will be a patch for the ebuild and the full ebuild adding the use flag and needed items tested and works fine here without this gdm is just a pain in the butt if ipv6 is enabled and x trys to use ipv6 in any way shape or form
Created attachment 49234 [details, diff] gdm ebuild ipv6 patch patch to add ipv6 support to gdm 2.6.0.6 ebuild
Created attachment 49235 [details] gnome-base/gdm/gdm-2.6.0.6.ebuild full ebuild of patched gdm 2.6.0.6
looks like this was commited last version bump but not closed so closing