Bug ID 501715: [DNS] RESOLV::lookup in CLIENT_ACCEPTED doesn't cache responses for VIP w/HTTP profile

Last Modified: Jul 12, 2023

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

Known Affected Versions:
11.4.1

Fixed In:
11.4.1 HF9

Opened: Jan 19, 2015

Severity: 3-Major

Symptoms

RESOLV::lookup command does not cache responses if it is called within CLIENT_ACCEPTED event for VIP with HTTP profile.

Impact

DNS responses are not cached. RESOLV::lookup requests DNS RR instead of getting response from its cache.

Conditions

iRule with RESOLV::lookup command in CLIENT_ACCEPTED event assigned to VIP with HTTP profile

Workaround

Use RESOLV::lookup in HTTP_REQUEST event.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips