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 - 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, Commented Oct 8, 2018 at 10:14

score 2 · Accepted Answer · 2019-03-04 10:10:43Z

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 [^ ]*'

answered Oct 7, 2018 at 18:27

user313992

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