The issue is reproducible in the latest published versions of openssh carrying the patches in https://github.com/openssh-gsskex/openssh-gsskex for Ubuntu (impish), Debian (unstable), and Fedora (rawhide).
I filed a bug report in https://github.com/openssh-gsskex/openssh- gsskex/issues/20 to make sure the gsskex patch upstream is aware of this issue. ** Bug watch added: github.com/openssh-gsskex/openssh-gsskex/issues #20 https://github.com/openssh-gsskex/openssh-gsskex/issues/20 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1938144 Title: monitor_read: unpermitted request 48 on server while attempting GSSAPI key exchange To manage notifications about this bug go to: https://bugs.launchpad.net/openssh/+bug/1938144/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs