The value of tmnxIPMafMatchSrcPortType is used to restrict ingress
management packets to either the configured management Ethernet
port or any other logical port (LAG, port, or channel) on the
device. By default, management traffic is accepted on any interface.
Reading the value of tmnxIPMafMatchSrcPortType when it is different
from 'any' will cause it to be recalculated based on the value of
tmnxIPMafMatchSrcPortId.