The kvirc 3.0.0-beta2 will actually explicitly disable ipv6 when USE="ipv6" is enabled. I have not tested its behavior when the ipv6 USE flag is disabled or undefined. I have edited the ebuild such that it will tell the configure script not to disable ipv6 (the default behavior is to enable ipv6) and will attach the patch if it compiles successfully. I haven't been able to test its success yet; kvirc is still recompiling.
Created attachment 8461 [details, diff] Works when ipv6 USE flag is enabled I just finished compiling kvirc with this patch applied to the ebuild. The ipv6 USE flag was enabled, and kvirc did build with ipv6 support. I have not tested it without the ipv6 flag or with -ipv6.
Fixed in portage. Thanks.