I'm having an issue with a new device obtaining a DHCP lease. The client is a LiftMaster MyQ Internet Gateway device and a static IP can't be set. I see the request hit the DHCP log but it just loops between discover and offer every 5 seconds (log below). I've attempted to set a static definition but the behavior didn't change. I don't see anything of interest in the firewall or IPS logs. I've turned off IPS and country blocking to see if the behavior changed and it doesn't appear to be affected either. Just to ensure the device wasn't faulty, I plugged the client directly into the modem bypassing the UTM completely and it obtained an IP from my ISP and the green online line lit up. Any help in identifying the issue or a viable work around would be greatly appreciated.
DHCP Log:
2017:07:26-13:41:57 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:02 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:02 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:07 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:07 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:12 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:12 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:17 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:17 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:22 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:22 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:27 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:27 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:32 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:32 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:37 sophos dhcpd: DHCPDISCOVER from 64:52:99:6b:50:b0 via eth0
2017:07:26-13:42:37 sophos dhcpd: DHCPOFFER on 192.168.1.128 to 64:52:99:6b:50:b0 via eth0
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