Bug ID 726058: DHCP in forwarding mode decrements the received DHCP client side IP TTL prior to forwarding the packets towards the DHCP server

Last Modified: Jun 10, 2021

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,, 15.0.0, 15.0.1,,,,

Opened: Jun 28, 2018
Severity: 3-Major


DHCP packet dropped by the DHCP relay agent after the BIG-IP system, if the DHCP clientside packet received by the BIG-IP system has a TTL of 1.


Loss of DHCP service via the BIG-IP system.


-- BIG-IP system configured as a DHCP forwarder. -- DHCP client side packet received with a TTL of 1.


To mitigate this issue, have the DHCP client send a DHCP request with an IP TTL greater than or equal to 2.

Fix Information


Behavior Change