Hi, Lease Query is not working in latest master(#feb57bfef488dbb8a850b47b6a72eb1db0285fbe), Other messages are working fine. And same LQ was working fine previously. Debug output: Info : FreeRADIUS Version 4.0.0 Info : Copyright 1999-2020 The FreeRADIUS server project and contributors Info : There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A Info : PARTICULAR PURPOSE Info : You may redistribute copies of FreeRADIUS under the terms of the Info : GNU General Public License Info : For more information about these matters, see the file named COPYRIGHT Info : Starting - reading configuration files ... Debug : Including dictionary file "/etc/raddb/dictionary" ... ... proto_dhcpv4_udp - Received DHCP-Request XID 13df720c length 332 dhcpv4_udp server 127.0.0.1 port 6767 on interface lo (11) Running request (11) Received DHCP-Request XID 13df720c from 127.0.0.1:6768 to 127.0.0.1:6767 via lo (11) DHCP-Opcode = Client-Message (11) DHCP-Hardware-Type = Ethernet (11) DHCP-Hardware-Address-Length = 6 (11) DHCP-Hop-Count = 0 (11) DHCP-Transaction-Id = 333410828 (11) DHCP-Number-of-Seconds = 0 (11) DHCP-Flags = 0 (11) DHCP-Client-IP-Address = 0.0.0.0 (11) DHCP-Your-IP-Address = 0.0.0.0 (11) DHCP-Server-IP-Address = 0.0.0.0 (11) DHCP-Gateway-IP-Address = 0.0.0.0 (11) DHCP-Client-Hardware-Address = 04:11:22:33:44:55 (11) DHCP-Message-Type = DHCP-Request (11) DHCP-Client-Identifier = 0x041122334455 (11) DHCP-Parameter-Request-List = DHCP-Subnet-Mask (11) DHCP-Parameter-Request-List = DHCP-Router-Address (11) DHCP-Parameter-Request-List = DHCP-Domain-Name-Server (11) DHCP-Vendor-Class-Identifier = 0x766961736174312e30 (11) DHCP-Subscriber-Id = "041122334455@aut.res.viasat.com" (11) DHCP-Relay-Remote-Id = 0x04a0bc112233 (11) DHCP-Relay-Circuit-Id = 0x00a0bc223344 (11) DHCP-Requested-IP-Address = 169.254.1.191 (11) DHCP-DHCP-Server-Identifier = 10.43.18.31 (11) Running 'recv DHCP-Request' from file /etc/raddb/sites-enabled/dhcp (11) recv DHCP-Request { ... ... TIMER - proto_dhcpv4_udp - cleanup delay proto_dhcpv4_udp - Received DHCP-Lease-Query XID 103fd54a length 321 dhcpv4_udp server 127.0.0.1 port 6767 on interface lo Failed tracking packet from client default - discarding it Regards, Nagamani Chinnapaiyan