It seems only OpenBSD got this right (in my opinion) from a cursory inspection of the man pages for resolv.conf - they allow for not-default port in it. There i

It seems only OpenBSD got this right (in my opinion) from a cursory inspection of the man pages for resolv.conf - they allow for not-default port in it. There is a bug in glibc around since 2012 [1] for this! Oh well. 1. https://sourceware.org/bugzilla/show_bug.cgi?id=14242 https://sourceware.org/bugzilla/show_bug.cgi?id=14242