https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264600
Bug ID: 264600
Summary: sshd: Fssh_kex_exchange_identification: Connection
closed by remote host errors
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
After upgrading a public-facing SSH server to OpenSSH 8.8 (13.1-RELEASE), it
has started spamming dmesg logs with:
error: Fssh_kex_exchange_identification: Connection closed by remote host
To replicate it, just `nc ssh-server 22`.
Per conversation with @emaste, opening this PR to track it.
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