[rbldnsd] Idea for cleaning up forked child when reloading parent dies

[Victor Duchovni]

Currently, when forking for reloads, the child process could be stuck
forever with stale data. We can make use of the fact that when the
parent process is killed, the status report pipe is closed. If the child
selects for read on the status report pipe, it can exit as soon as the
pipe becomes readable. I don't have a patch handy, but this should not
be too difficult...

-- 
	Viktor.