After I update the routing metric for the wwan0 interface, then ping command show there is no internet connectivity.
Here are the steps of what I’m doing:
- Run quectel-CM:
sudo /usr/local/bin/quectel-CM -s internet.comcel.com.co - Ping using the wwan0 interface. This is successful.
ubuntu@ubuntu:~$ ping -I wwan0 -c 3 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 10.131.139.211 wwan0: 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=118 time=36.8 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=118 time=28.8 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=118 time=27.7 ms
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 27.736/31.155/36.853/4.055 ms
- Change the routing metric:
sudo ifmetric wwan0 601. Here’s what the routing table looks like before and after.
# BEFORE the ifmetric command.
ubuntu@ubuntu:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.131.139.212 0.0.0.0 UG 0 0 0 wwan0
0.0.0.0 192.168.0.1 0.0.0.0 UG 600 0 0 wlan0
10.131.139.208 0.0.0.0 255.255.255.248 U 0 0 0 wwan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlan0
# AFTER the ifmetric command.
ubuntu@ubuntu:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 600 0 0 wlan0
0.0.0.0 10.131.139.212 0.0.0.0 UG 601 0 0 wwan0
10.131.139.208 0.0.0.0 255.255.255.248 U 601 0 0 wwan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlan0
- Ping again, this time it fails:
ubuntu@ubuntu:~$ ping -I wwan0 -c 3 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 10.131.139.211 wwan0: 56(84) bytes of data.
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2036ms
Is there anything I’m doing wrong? Are there any alternatives to update the routing metric for the wwan0 interface?