Hi, Previously the expansion %{hex:DHCP-Client-Hardware-Address} worked correctly by expanding to the mac address value inside the attribute. Now the latest master(#a88b05513956b21ec037383780f9b568eeb49124) is expanding the raw string "DHCP-Client-Hardware-Address" to hex. However, %{hex:%{DHCP-Client-Hardware-Address} is working as expected(expands the value inside the attribute). Is this behavior is an intended change or a mistake? debug out: (1) if ("0x%{hex:DHCP-Client-Hardware-Address}" == "%{DHCP-Relay-Remote-Id}") { (1) EXPAND 0x%{hex:DHCP-Client-Hardware-Address} (1) EXPAND %{hex:DHCP-Client-Hardware-Address} (1) --> 444843502d436c69656e742d48617264776172652d41646472657373 (1) --> 0x444843502d436c69656e742d48617264776172652d41646472657373 (1) EXPAND %{DHCP-Relay-Remote-Id} (1) --> 0x00a0bc00000a (0) if ("0x%{hex:%{DHCP-Client-Hardware-Address}}" == "%{DHCP-Relay-Remote-Id}") { (0) EXPAND 0x%{hex:%{DHCP-Client-Hardware-Address}} (0) EXPAND %{DHCP-Client-Hardware-Address} (0) --> 00:a0:bc:00:00:0a (0) EXPAND %{hex:%{DHCP-Client-Hardware-Address}} (0) (%{hex:00:a0:bc:00:00:0a}) (0) --> 00a0bc00000a (0) --> 0x00a0bc00000a Regards, Nagamani Chinnapaiyan