Last Modified: Jul 02, 2025
Affected Product(s):
F5OS F5OS, F5OS-A, F5OS-C, Velos
Known Affected Versions:
F5OS-A 1.5.3, F5OS-A 1.8.0, F5OS-C 1.6.0, F5OS-C 1.6.1, F5OS-C 1.6.2, F5OS-C 1.8.0, F5OS-C 1.8.1
Opened: Jul 01, 2025 Severity: 3-Major
F5OS does not send RADIUS Access-Request messages to a server specified as an IPv6 address. No messages are transmitted at all. When attempting authentication against SSH, log messages similar to the following are in /var/log/secure: sshd[30736]: pam_radius_auth: Failed looking up IP address for RADIUS server [2001:db8::1] (errcode=9)
F5OS remote authentication does not work.
F5OS remote authentication configured with a server defined by IPv6 address.
Reference the RADIUS server by DNS hostname rather than IP address. Important: The DNS hostname should only only resolve to IPv6 addresses, and not also be associated with an IPv4 address; for more information, refer to ID1975245: https://cdn.f5.com/product/bugtracker/ID1975245.html
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