DHCPv4 relay query

ameen.shajahan at wipro.com ameen.shajahan at wipro.com
Thu Mar 21 05:51:29 UTC 2013

Hi all,
I am trying to run ISC DHCP v4 relay in our system below.

eth0                                                                                                                       eth0.1            eth0
DHCP Server---------Switch-----------Our own network-----------------------Relay---------------------PC                                                                                        

In DHCP Server I can able to see upto DHCP offer message, so I captured the packet and it shows source/destination port as 67 only.
Usually in relay the source and destination will have 67 /68 and it change accordingly.

Both eth0 and eth0.1 IP of relay pings from DHCP server. Then I don't why the source and destination port as 67 alone.
If somebody knows how to test relay for this setup .
Please let me know that would be great help for me.

Snap in Server side
DHCPDISCOVER from d0:27:88:d7:4a:31 (wipro-PC) via
DHCPOFFER on to d0:27:88:d7:4a:31 (wipro-PC) via
BOOTREQUEST from 00:04:9a:d7:c3:40 via eth0: BOOTP from dynamic client and no dynamic leases
DHCPDISCOVER from d0:27:88:d7:4a:31 (wipro-PC) via
DHCPOFFER on to d0:27:88:d7:4a:31 (wipro-PC) via


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