[SOLVED] Client does not set DHCP server's MTU

DBLouis · 03-03-2018, 03:34 AM

Hello

I have configured my DHCP server to send the correct MTU (9000) to clients.
It worked before on Fedora but since I went to Slackware I have to set it manually.
The problem appears on every computer I put Slackware onto, desktop, laptop and raspberry pi, with version 14.2 and current.

Any ideas?

abga · 03-03-2018, 02:23 PM

Hi

Can you please check what MTU you have on the DHCP server network interface?

Code:

ip link show

DBLouis · 03-03-2018, 02:29 PM

Actually I have found a solution. There was a disabled option in `/etc/dhcpcd.conf`:

Code:

option interface_mtu

I enabled it and it worked.

abga · 03-03-2018, 02:36 PM

Quote:

Originally Posted by DBLouis

Actually I have found a solution. There was a disabled option in `/etc/dhcpcd.conf`:

Code:

option interface_mtu

I enabled it and it worked.

Happy to hear that you made it work!
I took your configuration as working, considering that you did it already on Fedora.

Quote:

I have configured my DHCP server to send the correct MTU (9000) to clients.
It worked before on Fedora but since I went to Slackware I have to set it manually.