Bug ID 632553: DHCP: OFFER packets from server are intermittently dropped

Last Modified: May 15, 2019

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5

Opened: Dec 08, 2016
Severity: 2-Critical
Related AskF5 Article:
K14947100

Symptoms

With a DHCP relay virtual server, OFFER packets from DHCP server are intermittently not forwarded to the client and dropped on BIG-IP.

Impact

Client machines joining the network do not receive DHCP OFFER messages.

Conditions

It is not known exactly what triggers this condition, but it occurs intermittently when the DHCP relay virtual server is in use.

Workaround

Enforce that the serverside flow is getting deleted, e.g. if dhcp server 10.0.66.222 is broken, issue the following tmsh command: tmsh delete sys connection ss-server-addr 10.0.66.222 cs-server-port 67

Fix Information

None

Behavior Change