The tmnxVrrpOperMismatchDiscard is valid only if the VRRP virtual
router instance associated with this entry is a non-owner.
The value of tmnxVrrpOperMismatchDiscard specifies the action taken
when IP Address List within a received VRRP Advertisement message
does not match the configured virtual router IP addresses. If the
value is 'true', then such VRRP messages are discarded.