Bug ID 625291: dhclient doesn't honor 'interface-mtu' request-options

Last Modified: Apr 20, 2022

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5, 14.0.0,,,,,, 14.0.1,

Fixed In:

Opened: Oct 27, 2016
Severity: 4-Minor


Requesting MTU value from DHCP server is explicitly disabled using a configuration similar to the following: tmsh modify sys management-dhcp sys-mgmt-dhcp-config request-options delete { interface-mtu }. But if DHCP send MTU value in its reply, this MTU will be configured on BIG-IP management interface.


BIG-IP accepts the MTU value provided.


DHCP server ignoring option sent by BIG-IP DHCP client.


1. Add supersede interface-mtu 1500; to interface "mgmt" section of the /etc/dhclient.conf file. 2. Restart dhclient.

Fix Information

dhclient now honors 'interface-mtu' request-options.

Behavior Change