The type of network address contained in
setClientAddress. 'unknown' means no address has
been defined. 'other' means no other type value
applies. 'ip' is an Internet IP address.
'ethernet' is an 802.3 MAC address. If
setClientAddressType does not accompany
setClientAddress in a set request, the default type
is 'ip'. Corresponds indirectly to the address
value labeled 'Set Client n:' in the SERVER INTERNET
SNMP CHARACTERISTICS display.