The source last layer 4 port number that would determine
the l4 port range to match an IP flow. The value of 0 means
that all layer 4 information would be ignored when matching
an IP flow. If this object has any value other than 0 then
this rule takes precedence over any rule that specifies an
individual physical input port, a VLAN or any incoming
implicit 802.1p traffic class rule.
Any attempt to write a rule that indicates a non-default value
for this object together with an individual port value for
extremeQosRuleInPort will be rejected by the agent.
Any attempt to write an ICMP rule specifying an IP pattern with
a non-default value for this object will be rejected by the agent.