Bug ID 2389757: ICMP with ID 0 flows with ipother profile does not work

Last Modified: Aug 26, 2026

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

Known Affected Versions:
17.1.3, 17.1.3.1, 17.1.3.2, 17.1.3.4, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 21.0.0, 21.0.0.1, 21.0.0.2, 21.0.0.3, 21.1.0, 21.1.0.1

Opened: Jul 13, 2026

Severity: 3-Major

Symptoms

Virtual server with 'ipother' profile fails to forward ICMP echo reply when ICMP identifier is 0x0000

Impact

Virtual server with 'ipother' profile fails to forward ICMP echo reply when ICMP identifier is 0x0000

Conditions

- Virtual server with ipother profile - ICMP reply packet with identifier 0

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips