# Help to change container interface MTU

**URL:** <https://forum.ansible.com/t/help-to-change-container-interface-mtu/35643>\
**Category:** AWX Project\
**Tags:** awx\
**Created:** [August 19, 2021, 6:02pm UTC](https://forum.ansible.com/t/help-to-change-container-interface-mtu/35643 "2021-08-19T18:02:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Hailson\_Ferreira](https://avatars.discourse-cdn.com/v4/letter/h/f9ae1b/32.png) [@Hailson\_Ferreira](https://forum.ansible.com/u/Hailson_Ferreira)\
**Post date:** [August 19, 2021, 6:02pm UTC](https://forum.ansible.com/t/help-to-change-container-interface-mtu/35643/1 "2021-08-19T18:02:38Z")

</div>

I’m trying to change container awx-task interface MTU 1450 to 1400 but this keep getting this error:

[root@awx-7948bf7847-7zqwm ~]# ip link set dev eth0 mtu 1400  
RTNETLINK answers: Operation not permitted

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

I have to change MTU because is needed to sync with our intern gitlab…

How can I change this?

I installed AWX with k3s