My only suggestion would be to try setting up the helper with
127.0.0.1 and then your PF server's IP address.  Don't know how the
switch will handle it, but it may redirect DHCP to localhost (the switch)
and PF...

-Arthur

-------------------------------------------------------------------------
Arthur Emerson III                 Email:      
[email protected]<mailto:[email protected]>
Network Administrator              InterNIC:   AE81
Mount Saint Mary College           MaBell:     (845) 561-0800 Ext. 3109
330 Powell Ave.                    Fax:        (845) 562-6762
Newburgh, NY  12550                SneakerNet: Aquinas Hall Room 11


From: Tim DeNike <[email protected]<mailto:[email protected]>>
Reply-To: 
"[email protected]<mailto:[email protected]>"
 
<[email protected]<mailto:[email protected]>>
Date: Thursday, May 14, 2015 at 11:34 AM
To: 
"[email protected]<mailto:[email protected]>"
 
<[email protected]<mailto:[email protected]>>
Subject: Re: [PacketFence-users] IP tracking/ip helpers, etc.

Your other option if you don't want to run a DHCP server outside of the 
switches is to run the remote arp sensor on a box attached to the switch (Ive 
never tried it), or setup a mirror port and mirror traffic to PF.

I really don't know if the dhcp relay will work with the dhcp server enabled.  
Id guess not.

Chicken scratch network diagram would be helpful.

But seriously.. Look into running a couple central DHCP servers.. much easier 
to maintain in the long run (IMHO).


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