Bug ID 520268: [FW] FQDN: Sometimes IP-mapping update doesn't refresh all mappings with the first attempt

Last Modified: Apr 10, 2019

Bug Tracker

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

Opened: Apr 28, 2015
Severity: 3-Major

Symptoms

[FW] FQDN: Sometimes IP-mapping update doesn't refresh all mappings with the first attempt. As a result, FQDN address entries may be missing or stale.

Impact

Stale or missing FQDN/IP address resolutions.

Conditions

FQDN sources and/or destinations in network firewall rules.

Workaround

Set the Min/Max TTL to 0 in GUI : DNS -> Settings -> Caches This will ignore any TTL published by DNS server.

Fix Information

None

Behavior Change