bad_address filling up dhcp leases
Having a weird issue thats just started in the last week. For no reason at all the dhcp leases suddenly fill up with bad addresses until the scope is full and noone can log on. The network grinds to a halt at the same time. Nothing has been changed on the dhcp side of things but a few months ago i had enabled dns scavenging, however this problem has only happened twice in the last week. It seems to happen at the time the clients renew their leases which would explain why there is a sudden flood of bad addresses but i cant think of anything that would be causing this to happen.
Any ideas, advice are most welcomed!