Bug ID 2151885: When using service-down-action reset/drop on a pool attached to a DHCP virtual TMM might experience a crash.

Last Modified: Dec 06, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 21.0.0

Opened: Nov 13, 2025

Severity: 3-Major

Symptoms

When using service-down-action reset/drop on a pool attached to a DHCP virtual TMM might experience a crash.

Impact

Traffic disrupted while tmm restarts.

Conditions

DCHP virtual-server with a pool member using service-down-action feature set to 'reject' or 'drop'.

Workaround

Re-configure service-down-action on a pool member to 'none'.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips