On 28/07/17 22:12, Jason Lixfeld wrote:
Hi all,
I’ve got a 4500 Sup7L-E running 15.2(2) acting as a DHCP relay with
clients directly connected to it. The client interfaces on this
relay are in VRFs, and the helper is in the global table.
The issue is the 4500 stamps the relay agent IP in the DISCOVER as
being the incoming interface IP where the DISCOVER was received,
By relay agent IP do you mean giaddr in the bootp header? If so, this is
required - that's how DHCP servers discover the source subnet.
You'd need support at the DHCP server side to map giaddr to a different
reply IP.
I believe ISC dhcpd lacks this but the newer Kea might have it?
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