* Find IP address of active interface
@ 2022-07-25 0:48 Kai Hendry
2022-07-25 18:07 ` Stephen Hemminger
0 siblings, 1 reply; 2+ messages in thread
From: Kai Hendry @ 2022-07-25 0:48 UTC (permalink / raw)
To: netdev
Is there an easier way than:
ip route get 8.8.8.8 2>/dev/null|grep -Eo 'src [0-9.]+'|grep -Eo '[0-9.]+'
To figure out the active, Internet routing interface?
Thank you,
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Find IP address of active interface
2022-07-25 0:48 Find IP address of active interface Kai Hendry
@ 2022-07-25 18:07 ` Stephen Hemminger
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Hemminger @ 2022-07-25 18:07 UTC (permalink / raw)
To: Kai Hendry; +Cc: netdev
On Mon, 25 Jul 2022 08:48:15 +0800
"Kai Hendry" <hendry@iki.fi> wrote:
> Is there an easier way than:
>
> ip route get 8.8.8.8 2>/dev/null|grep -Eo 'src [0-9.]+'|grep -Eo '[0-9.]+'
>
> To figure out the active, Internet routing interface?
>
> Thank you,
Alternate:
$ ip -j route get 8.8.8.8 | \
python3 -c 'import json,sys;obj=json.load(sys.stdin);print(obj[0]["dev"]);'
enp2s0
But both options won't do what you want if there is ECMP routes.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-07-25 18:07 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-07-25 0:48 Find IP address of active interface Kai Hendry
2022-07-25 18:07 ` Stephen Hemminger
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).