Quick test with https://launchpad.net/~ahasenack/+archive/ubuntu/openssh- gsskeyex-2053146/+packages on jammy (but there are builds for other releases too), seems to work:
Mar 13 20:52:58 j-keyex sshd[1638]: Authorized to ubuntu, krb5 principal andreas@LOWTECH (krb5_kuserok) Mar 13 20:52:58 j-keyex sshd[1638]: Accepted gssapi-keyex for ubuntu from 10.0.102.1 port 48450 ssh2: andreas@LOWTECH -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2053146 Title: openssh 8.9p1 for Jammy auth2-gss patch for gssapi-keyex method is slightly wrong To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2053146/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
