Multi-vrf DHCP: giaddr and egress interface are set incorrectly

[cisco_eng_1]

Hello, we have the following:

Cisco IOS XE Software, Version 16.12.04
Cisco IOS Software [Gibraltar], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 16.12.4, RELEASE SOFTWARE (fc5)

1. dhcp client + switch a + vrf a using helper ip  source loopback b from vrf b >>>>REQUEST>>>>> dhcp server in vrf b 

2. dhcp client + switch a + vrf a using source loopback b from vrf b <<<<OFFER<<<<< dhcp server in vrf b

3. Relay is successful and offer is received at loopback b but giaddr and egress interface are set incorrectly

Can anyone help?

[MHM Cisco World]

...

[paul driver]

Hello

Post config of switch please

[Harold Ritter · Accepted solution]

Hi @cisco_eng_1 ,

Try setting the VPN information in option 82 using the following command.

ip dhcp relay information option vpn

You will also need to match that additional information on the DHCP server side.

With IOS as the DHCP server, you would do the following:

ip dhcp pool test
vrf A

But I am not sure what is your DHCP server.

Regards,