How to find out the interface which is being used for internet?

Question

I have multiple network interfaces and I am not sure which interface is being used for the internet connection.

I tried the methods which are listed in the question How to find out which interface am I using for connecting to the internet?, howerver I'm getting multiple "default" network interfaces when I use suggested solutions.

If I'm not wrong, as per the wiki - https://en.wikipedia.org/wiki/Metrics_(networking), "The route will go in the direction of the gateway with the lowest metric" (here the interface (ens6) which have 0 metrics), so the answer is ens6? — smc, Oct 08 '18 at 10:14

score 2 · Accepted Answer · 2019-03-04T10:10:43.580

2

for ipv4:

ip -o route get 8/8 | grep --color=always 'dev [^ ]*'

for ipv6:

ip -o route get 2000::/3 | grep --color=always 'dev [^ ]*'

edited Mar 04 '19 at 10:10

answered Oct 07 '18 at 18:27

1 Answers1