[Ubuntu 18.04] Wireless, Wired의 인터넷 연결 우선순위 변경

• Install ifmetric

$ sudo apt install ifmetric

 

• Print metrics usind route

$ route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.0     0.0.0.0         UG    100    0        0 eth0
0.0.0.0         192.168.1.0     0.0.0.0         UG    600    0        0 wlan0

 

• Set lower metric on wlan0

$ sudo ifmetric wlan0 60

 

• Check routing table

$ route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.0     0.0.0.0         UG    100    0        0 eth0
0.0.0.0         192.168.1.0     0.0.0.0         UG    60     0        0 wlan0