Last Modified: Dec 05, 2025
Affected Product(s):
BIG-IP AFM, APM, ASM
Known Affected Versions:
16.1.6, 16.1.6.1, 17.1.3, 17.5.1, 17.5.1.2, 17.5.1.3, 21.0.0
Opened: Sep 24, 2025 Severity: 3-Major
Both of the following messages are frequently (several times per second) logged to /var/log/tmm*: <13> Sep 24 09:55:01 bigip1 notice Failed to open /var/IpRep/F5IpRep.dat <13> Sep 24 09:55:01 bigip1 notice Failed to open /var/IpRep/F5IpV6Rep.dat Heavy log file writing can result in a possible tmm SIGABRT due to a heartbeat failure.
A frequent log message might slow TMM. This might result in TMM missing a heartbeat, which will trigger a tmm SIGABRT and resulting core. Traffic disrupted while tmm restarts.
ip-intelligence is configured, and both the IPv4 and IPv6 intelligence databases are missing. IP intelligence is a optional subscription feature that can be configured in various BIG-IP modules, such as AFM, ASM, and APM, and irules.
Unconfigure ip-intelligence and remove any configuration that refers to IP reputation, or ensure that the ip-intelligence databases are available.
None