This object represents the number of DHCP request messages
received by the Gateway.
The UE may send the DHCP-Request message with
Requested-IP-Address option in one of the many following
scenarios:
UE is rebooting and it has an IPv4-address with unexpired
lease.
UE is selecting an offer from the DHCP-server.
UE is renewing the lease.
UE is attempting to rebind the lease.