IP6000 - Failed to get boot parameters via DHCP

Hi all, long term Polycom user but first time poster.  My question is regarding an IP6000 2201-15600-001 and a Juniper SRX210 firewall with POE.  The phone is plugged directly into a fast ethernet POE port on the SRX, and the SRX is also serving DHCP.  I have tried 3.3.5, 4.0.4, 4.0.7, and 4.0.11 all with the same results. 

With this configuration, the phone fails to get an IP address.  From a DHCP debug on the SRX, I see the DISCOVER from the phone, the OFFER from the SRX, but then no REQUEST from the phone.  The DISCOVER / OFFER keeps trying for a while until the phone gives up. 

However if I put a Cisco 3560 in between the 2 devices, it works fine.  An IP550 or Snom 320 plugged directly into the SRX also works flawlessly.  I have tried disabling CDP and LLDP on the phone and setting up LLDP / LLDP-MED with a voice vlan on the SRX, also no effect. 

Any ideas?  I've been banging my head against this on and off for the last 2 days.  

Thanks!