Multiple commenters (#19, #43) have posted the workaround. In my ~/ssh/.config I now have
Host * # Workaround for the dreaded 'connection reset by peer' bug, openssh >=5.7: Ciphers aes128-ctr,aes192-ctr,aes256-ctr and I no longer see this problem. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/708493 Title: Can't login anymore: Read from socket failed: Connection reset by peer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/708493/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs