I use plenty of servers without Kerberos and I never see this. I don't think it's clear that having GSSAPIAuthentication on by default is the problem. I think it's more likely that there is some other cause, and turning GSSAPIAuthentication off is merely a workaround.
I also suspect that reporters have a number of different underlying problems. One of them might be reverse DNS lookups timing out. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/84899 Title: SSH with GSSAPIAuthentication option on SSH servers are very slow To manage notifications about this bug go to: https://bugs.launchpad.net/openssh/+bug/84899/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs