Bug ID 445329: DNS cache resolver connections can be slow to terminate

Last Modified: May 14, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1

Fixed In:
11.6.0, 11.5.3

Opened: Jan 17, 2014
Severity: 1-Blocking
Related AskF5 Article:
K17273

Symptoms

An excessive number of DNS cache resolver connections can build up if local configuration errors (routing, interfaces, VLANs) exist.

Impact

An excessive number of outbound DNS cache connections are present.

Conditions

Local networking configuration errors exist.

Workaround

Ensure default routes for IPv4 and IPv6 are properly configured and operational.

Fix Information

Local connection errors now cause immediate connection termination.

Behavior Change