The Plucky autopkgtest logs from https://autopkgtest.ubuntu.com/packages/openssh already show:
""" ## Checking ssh logs to confirm publickey auth was used Dec 14 22:44:16 sshd-gssapi.example.fake sshd-session[2213]: Accepted publickey for testuser2020-2 from 127.0.0.1 port 43364 ssh2: ED25519 SHA256:7vF3468XCZOawompwDThLsGsnPoUaP5Ki/3KaQLq/2M ## PASS test_gssapi_keyex_pubkey_fallback """ ** Changed in: openssh (Ubuntu Plucky) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2028282 Title: [SRU] SSH pubkey authetication fails when GSSAPI enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2028282/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs