Arch Linux

Shibumi

Package Maintainer (PM)

Registered: 2013-04-14

Posts: 41

Website

How to set MTU on interface with systemd-networkd without reboot

Hey guys,
do you have any idea how I can set the MTU for an interface with systemd-networkd without a reboot?
I tried something like this:

/etc/systemd/network/en0s25.network

[Match]
Name=enp0s25

[Link]
MTUBytes=9000

[Network]
Address=192.168.1.101/24
Gateway=192.168.1.1/24
DNS=192.168.1.1

Problem: When I restart systemd-networkd nothing happens. When I reboot, it works fine. (setting it manually via ip link set enp0s25 works as well, but want to automate several VM clusters so ip link set is unhandy)

T4cC0re

Member

From: Germany

Registered: 2018-06-22

Posts: 3

Website

Re: How to set MTU on interface with systemd-networkd without reboot

Hi,

had the same issue recently. The conclusion I came to was to just set it manually once via

ip link set enp0s25 mtu 9000

(Although I recon you might have come to the same conclusion or simply rebooted)
Seems that networkd does not re-configure links on configured interfaces? Don't know.

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