Some DHCP client log messages report "DHCP4" or "DHCP6" instead of "DHCPv4" or "DHCPv6" as used within the rest of the codebase. Typos fixed.
Some DHCP client log messages report "DHCP4" or "DHCP6" instead of "DHCPv4" or "DHCPv6" as used within the rest of the codebase. Typos fixed.