Unable to set MTU 1400n on interface

I'am trying to set MTU 1400 on the network interface eth0, but it keep getting this error:

SIOCSIFMTU: Operation not permitted

command:

[root@awx-7948bf7847-7zqwm ~]# sudo ifconfig eth0 mtu 1400
SIOCSIFMTU: Operation not permitted

Started 2021-08-18T20:38:08+00:00 by

Sergio Jachtchenco

Newbie 10 points

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