[c-nsp] DHCP release and helper address

[Peter Rathlev]

On Mon, 2008-04-21 at 15:15 +0000, MKS wrote:
> >  The release is a unicast from client to server, so why do you need it to
> >  be relayed?
> >
> 
> You are right, it isn't relayed but for some strange reason i got this
> in my logs (the cisco has a helper address)
> 
> *Apr 15 15:47:42.249: DHCPD: DHCPRELEASE message received from client
> 0100.1094.00ff.13
> *Apr 15 15:47:42.249: DHCPD: 10.17.255.20 is not a local address.
> *Apr 15 15:47:42.257: DHCPD: Reload workspace interface Vlan459 tableid 2.
> *Apr 15 15:47:42.257: DHCPD: tableid for 10.0.0.1 on Vlan459 is 2
> *Apr 15 15:47:42.257: DHCPD: client's VPN is .
> *Apr 15 15:47:42.257: DHCPD: DHCPRELEASE message received
> 
> I'm unable to reproduce this. It's probalby just an error on my side;)

Hmm... maybe the client wants to use the gateway (giaddr) for forwarding
releases, although I can't see why it would.

Releases are strictly speaking optional (RFC2131 3.2.4) by the way, so
unless this causes you some other problems, like starvation of address
pools, I think you can ignore it.

Regards,
Peter