[CentOS] How to make a network interface come up automatically on link up?

Tue Apr 23 09:25:14 UTC 2013
John Doe <jdmls at yahoo.com>

From: Joakim Ziegler <joakim at terminalmx.com>

> As I'd mentioned before, the problem isn't that the interface doesn't 
> come up on boot, it does, but since it's a point to point interface, 
> when I reboot the computer on the other end, it goes down and doesn't 
> come back up automatically. That is, link going down and up makes the 
> network configuration stay down, I have to manually take the interface 
> down and back up to make it work again.

Not the solution you want but, as a last resort, you could always have a 
cron script that checks every minute if the link is down...