function (deleting all address bindings) or delete the ACE of ACL occupying multiple masks,
and the source port check can be enabled normally.
When the IGMP Snooping or setting router interface is enabled, if the source port check is
enabled, then the source port check function fails due to inadequate mask resource. At this
moment, the system prompts: source port check applying failed for hardware out of
resources. In this case, you should release other resources of the masks, redisable and then
enable source port check.