%SW_MATM-4-MACFLAP_NOTIF: port Ap7/0/1 and port Ap2/0/1

[lcc]

We have 8x Cisco 9300-48P switches stacked and we are seeing the following error from the Application-Hosting Ports

%SW_MATM-4-MACFLAP_NOTIF: Host 3412.7856.0100 in vlan 1 is flapping between port Ap7/0/1 and port Ap2/0/1

The MAC address does not appear to be tied to any hardware vendor and we are not using any application hosting/DNA functionality.  Does anyone have any ideas?

[cevalsupport]

it happened to me that servers thar were disconnected could not reconnect due to duplication of ip address. the problem involved the same MAC address.

[Mohsin Alam]

looks like you are hitting this bug:

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvo79249

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