Specifies the management IP address of the local device. The management IP
address is carried in the management address TLV of LLDP packet and is used
to identify NM devices in network management. The management IP address
configured here must be a valid one and must be an IP address in the address
chain. If the IP address is not valid or is not configured, the management IP
address will be chosen from default IP addressees of the system. The sequence
of address searching is: loopback interface, management network interface, VLANIF
port and IP address chain (The smallest IP is chosen). If the default IP is not
found, the bridge MAC of the system is used.