[pkg-dhcp-devel] Bug#703698:

[Terry Burton]

Having just witnessed the same symptoms on our production service I
performed a quick investigation.

This revealed that dhcpd was iterating over a gettimeofday ... select
loop in which select was returning immediately with three sockets to
the failover peer that were in CLOSE_WAIT state. I was unable to debug
further since restoring service was a priority.

I shall add this to my ever growing list of failure modes for the ISC
DHCP server failover implementation.