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Port security violation on Stack

Last Modified: 2014-05-26

I have a port with port security violation on it. But if I check logg, it give me errors...The mac address match the device that is plugged into...

interface GigabitEthernet1/0/25
 description Z1AAQNET NIC1 i27
 switchport access vlan 201
 switchport mode access
 switchport port-security
 switchport port-security violation restrict
 switchport port-security mac-address 842b.2b72.a56e
 speed 1000
 duplex full
 spanning-tree portfast

May  8 12:06:49.735 UTC: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 842b.2b72.a576 on port GigabitEthernet1/0/25.
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