Advanced users • Re: Jumbo frames on PI5 - how to persist this setting?

Thanks bls,
That was a great idea - the rc.local trick works well - so far.
I added
ip link set eth0 down
ip link set eth0 mtu 9000
ip link set eth0 up
to the file /etc/rc.local

The systemctl unit hack not so good - the network does not come up now, so, as I am working from ssh terminal, I have to hook up a screen, connect a serial console, edit the flash or make a new flash. But it was worth a try - thanks in any case. Wonder if the command should have been in brackets or using ExecStartPost
like this
ExecStartPre="ip link set eth0 mtu 9000"
ExecStartPost="ip link set eth0 mtu 9000"

By the way the /etc/systemd/system/NetworkManager.service was already there so no copy needed from /lib,
If I find a solution I will post it.

Remains is that the ping packet size is limited to 8972 but that can be due to the other end of the network or the switch or router.

Statistics: Posted by h.larsen — Fri Mar 29, 2024 6:51 pm

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