Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP LTM
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: Dec 12, 2013 Severity: 5-Cosmetic
You see the following in /var/log/ltm: notice dag.roundrobin.udp.portlist: Unknown BigDB variable type 'port_list' This can also be observed by running tmsh modify sys db dag.roundrobin.udp.portlist value A tmm crash could also occur if it is doing round robin load balancing of udp and attempts to load balance a fragmented udp payload.
Traffic disrupted while tmm restarts.
The error will occur when tmm starts.
None
BIG-IP will now recognize dag.roundrobin.udp.portlist