This read-only Counter32 tallies the total number of DHCP Release packets, sent when a client voluntarily gives up its lease, that the relay agent has received. An admin uses this counter to understand how often clients on the relayed segment are explicitly releasing addresses rather than letting leases simply expire. For example, an unusual increase in this counter overnight might correspond with a batch of devices being decommissioned or rebooted with a fresh DHCP request cycle.