Help: DHCP DoS Attack

[Lee Eric]

Hi,

Recently I noticed a Dell DRAC management release/ack DHCP offer very
fast, nearly 20 times/sec, and it makes DHCP server cannot offer other
systems. So is there any way can avoid such problem? It sounds like a
DoS attack actually.

I don't know why Dell DRAC has such problem but I have encountered twice
on my DHCP server.

My current solution is to migrate the management port to static IP
address range. However, I hope I can still use DHCP for these systems.

Any hints I appreciate.

Eric