Quoting Steve Litt (slitt@???):

> It's possible allright. It's as simple as:
>
> ip link set dev lo down
>
> called from /etc/runit/1 or /etc/runit/2 or whatever passes for those
> things in the land of sysvinit.

{sigh} That's possible, all right.

So is wrapping the server in C4 and lighting a match.

I'm unclear on why you'd do either one. There are myriad ways to cause
yourself needless pain, but those aren't ones I can see people doing
accidentally.