Hello,
According to both ip -4 link and ip -6 link, the qmimux0 interface has a MTU of 1500 bytes.
There is no “option mtu ‘xxxx’” in the mob1s1a1 section of /etc/config/network.
The router uses bands B3 + 5G N28 NSA, the modem reports:
root@lgr5g:~# gsmctl -A 'AT+QMTUINFO'
+QMTUINFO: 1,1416,1416
+QMTUINFO: 2,1500,1280
So the MTU of qmimux0 should be set to 1416 bytes if it uses IPv4 only and 1280 bytes if it uses both IPv4 and IPv6.
Of course the MTU of wireguard and openvpn / IPSEC interfaces have to be restricted accordingly.
May I have missed something ? Could this be the root cause of the netifd’s coredumps ?
Regards,