I try to set a static route in the network config that contains MTU 1100:

config route
        option interface 'lan'
        option target '1.2.3.5'
        option gateway '192.168.1.1'
        option metric '3'
        option mtu '1100'

but this mtu value is not applied after restarting the network service:

root@openwrt:~# cat /proc/net/route
Iface   Destination     Gateway         Flags   RefCnt  Use     Metric  Mask            MTU     Window  IRTT                         
br-lan  01020305        C0A80101        0007    0       0       3       FFFFFFFF        0       0       0                            
br-lan  C0A80100        00000000        0001    0       0       0       FFFFFF00        0       0       0

The displayed MTU in the proc is 0.

Can any one explain why the MTU value is 0. And how to apply the new MTU value ?

(Last edited by kallel on 15 Apr 2014, 17:07)