How to set permanent mtu size for ppp0

Question

every time I connect to my VPN, I should run

sudo ifconfig ppp0 mtu 1300

How could I make it permanent?

I'm using Ubuntu 14.04

Off-topic, try http://askubuntu.com/ – Yu Hao Aug 25 '15 at 06:01 — Yu Hao, Aug 25 '15 at 06:01

score 5 · Accepted Answer · answered Aug 25 '15 at 06:04

5

You can make your custom script at this address : /etc/network/if-up.d,

#!/bin/sh

if [ "$IFACE" = "ppp0" ]; then
    sudo ifconfig ppp0 mtu 1300
fi

finally make executable and enjoy from your life ...

answered Aug 25 '15 at 06:04

Farshad

score 1 · Answer 2 · answered May 31 '17 at 09:21

I've tried to apply Farshad's solution on ubuntu 16, and it wasn't working.

Only small fix was needed there - remove sudo from your script, because everything inside /etc/network/if-up.d/ dir is already run as root user.

#!/bin/sh

if [ "$IFACE" = "ppp0" ]; then
    ifconfig ppp0 mtu 1300
fi

2 Answers2