Bug ID 813701: Proxy ARP failure

Last Modified: Sep 13, 2023

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

Known Affected Versions:, 12.1.5,,,, 12.1.6

Fixed In:

Opened: Aug 09, 2019

Severity: 3-Major


In certain configurations, and when the BIG-IP system does not have a directly connected route to the request sender, proxy ARP may fail, leading to dropped ARP replies.


ARP replies are dropped, leading to connection failures.


-- Running v12.1.4.1 or with engineering hotfix 0.89.2. -- ARP requests and replies are processed by different TMMs. -- A directly connected route to the request sender is not available.


Create a self IP in the same subnet as the ARP request senders. This creates the necessary directly connected route.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips