Restarting ocserv doesn't clean up all workers

[niels at peen.ch (Niels Peen)]

I noticed when I stop or restart ocserv it will occasionally leave one or more 
worker processes behind. 

These processes appear idle and unused. Attaching an strace shows them waiting 
to receive something, which never changes:

#strace -p 510
Process 510 attached - interrupt to quit
recvfrom(8,

Could this be related to the EGAIN issue?

Thanks,
Niels