What command is used to view active DHCP leases on RouterOS?

The command used to view active DHCP leases on RouterOS is indeed /ip dhcp-server lease print. This command specifically queries the DHCP server configuration to display a list of current leases issued to clients on the network. It provides pertinent information such as the lease time, IP addresses assigned, and associated MAC addresses, which are essential for network management and troubleshooting.

In contrast, the other commands do not serve the same purpose. The command for showing IP addresses only lists the interfaces and their associated addresses, without any DHCP lease information. The DHCP client command is used to display details about DHCP clients configured on the router itself, rather than leases on a DHCP server. Finally, the command for firewall rules focuses on the filtering and managing of network traffic rather than DHCP functionality. Thus, using /ip dhcp-server lease print is the appropriate way to monitor active DHCP leases.