Wwan0 showing as offline in mwan3

I’ve followed this guide How to use multiple WAN connections using the mwan3 package [Old OpenWrt Wiki] … but no matter what I try, lte interface is still shown as offline.

config interface 'lte'
option ifname 'wwan0'
option apn 'internet'
option proto 'wwan'
option auto '1'
option dns '8.8.8.8 8.8.4.4'
option metric '20'

Otherwise the connection works perfectly and not even mwan3 is showing any errors (beside that it’s offline)

root@turris:~# ping -c 1 -I wwan0 www.google.com
PING www.google.com (216.58.209.196): 56 data bytes
64 bytes from 216.58.209.196: seq=0 ttl=54 time=38.608 ms

--- www.google.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 38.608/38.608/38.608 ms

But when I try diagnostics on it it has plenty of problems, like it can’t ping the default gateway (which I don’t set nor have)

ping -c 3 -W 2 -I wwan0 10.180.40.233

PING 10.180.40.233 (10.180.40.233): 56 data bytes

--- 10.180.40.233 ping statistics ---
3 packets transmitted, 0 packets received, 100% packet loss

Check IP Rules:

Missing both of the required interface IP rules

Check routing table:

Missing required interface routing table 2

LTE Modem is connected through USB and I got it working by installing the umbim package, any idea how to get proper status and tracking working correctly for this interface in mwan? Thank you.

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