Drop privileges for udhcp

[Bobby Mah]

Hello folks!

I would like udhcp to use setuid so that it can drop privileges after the
server socket is built. However, the server socket is inside a loop and is
re-created every time there's a bad packet.

I am proposing moving the server socket out of the loop and letting udhcp
die when a bad packet arrives. This way I can add the ability to drop the
privileges after the server socket is created.

Is there a reason to continue re-creating the server socket after a bad
packet arrives? If not, then will the change I propose be deemed acceptable?

Thanks,
Bobby
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