Replies to request coming over a relay goes to relay's internal IP, not to original request's source IP

Simon Hobson dhcp1 at
Sat Oct 6 16:17:28 UTC 2012

Oguz Yilmaz wrote:

>HOWEVER, I have deleted route on dhcpd server to reach 172.16.17.x

Then your network setup is broken. Fix your routing tables so that 
the server can send unicast packets to devices in the 172.16.17.x 
subnet. Don't forget that clients will normally renew their leases by 
unicast requests direct to the server - so there must be a route for 
both the request and the reply.

This is very basic IP networking you are getting wrong here.

Simon Hobson

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