Hello.  I have had a warning in the fix common problems plugin for a while.  It says Jumbo Frames detected on eth2.  I haven't had more than a single nic in this machine for a few years now.  How do I go about resolving this error when eth2 doesn't show in the interface anymore.

Please post the diagnostics.
 

 

I see that in my /boot/config/network.cfg has additional network devices.  Can I just edit this file?

# Generated settings:
IFNAME[0]="br0"
BRNAME[0]="br0"
BRSTP[0]="no"
BRFD[0]="0"
DESCRIPTION[0]="10G"
BRNICS[0]="eth0"
PROTOCOL[0]="ipv4"
USE_DHCP[0]="no"
IPADDR[0]="192.168.X.X"
NETMASK[0]="255.255.255.0"
GATEWAY[0]="192.168.X.X"
DNS_SERVER1="192.168.X.X"
DNS_SERVER2="8.8.8.8"
USE_DHCP6[0]="yes"
DHCP6_KEEPRESOLV="no"
IFNAME[1]="eth1"
DESCRIPTION[1]="front 2"
PROTOCOL[1]="ipv4"
USE_DHCP[1]="yes"
IFNAME[2]="eth2"
DESCRIPTION[2]="10g"
PROTOCOL[2]="ipv4"
USE_DHCP[2]="yes"
METRIC[2]="1"
MTU[2]="9014"
SYSNICS="3"

 

Edited February 2, 20242 yr by Gary

That file is from Settings - Network Settings

My problem is that settings - network settings only shows eth0

 

My problem is that fix common problems plugin shows the following error:

eth2 is configured with a non-standard MTU of 9014, aka Jumbo Frames. It is highly recommended that you change the 'Desired MTU' back to the default of 1500. If you are confident the entire network is setup correctly you can ignore this warning.

 

Yes you can edit that file.

8 hours ago, Gary said:

IFNAME[1]="eth1"
DESCRIPTION[1]="front 2"
PROTOCOL[1]="ipv4"
USE_DHCP[1]="yes"
IFNAME[2]="eth2"
DESCRIPTION[2]="10g"
PROTOCOL[2]="ipv4"
USE_DHCP[2]="yes"
METRIC[2]="1"
MTU[2]="9014"

Edit network.cfg, remove these lines and change SYSNICS="1" then reboot

@JorgeB  Thanks so much for confirming