https://lists.freebsd.org/archives/freebsd-ports-bugs/2026-January/089129.html
[Bug 292414] lang/gcc6-aux ,quarterly , build error , can not fetch
buglangaux
https://forums.freebsd.org/threads/fix-for-gcc6-aux-on-freebsd-12-amd64.62845/
Fix for gcc6-aux on FreeBSD-12/AMD64 | The FreeBSD Forums
If anybody is interested in the fix for lang/gcc6-aux on FreeBSD-CURRENT before it passes through the PR system, here it is...
fixauxfreebsdforums