Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1
Fixed In:
11.6.0, 11.5.3
Opened: Mar 21, 2014 Severity: 3-Major Related Article:
K16359
Error messages indicating userauth_hostbased mismatch are posted.
The sshd userauth_hostbased mismatch messages are innocuous only if they appear for the client sending one of the following: localhost, localhost.localdomain, slot1, slot2, slot3, slot4, slot5, slot6, slot7, or slot8. The system might post warning messages from sshd similar to the following: userauth_hostbased mismatch: client sends slot1, but the system resolves 127.3.0.1 to 127.3.0.1.
VIPRION-based system or VIPRION-hosted vCMP guest. This also occurs on a single slot.
None.
The system no longer posts extraneous warning messages caused by SSH connections from peers on the 127.0.0.0/8 subnet.