Ping reply from slave and MAC address duplication detected on slave device



This is our network config:

Master: [firmware:6.1.2 | hardware 4]
Slave: [firmware:6.1.2 | hardware 3]

We have suffered problem when we try to ping remote site through speedfusion, we receive some reply from backup peplink stating host unreachable.

64 bytes from icmp_seq=31 ttl=248 time=6.10 ms
64 bytes from icmp_seq=32 ttl=248 time=6.01 ms
64 bytes from icmp_seq=33 ttl=248 time=6.63 ms
64 bytes from icmp_seq=34 ttl=248 time=16.0 ms
64 bytes from icmp_seq=35 ttl=248 time=8.15 ms
64 bytes from icmp_seq=36 ttl=248 time=6.09 ms
64 bytes from icmp_seq=37 ttl=248 time=6.13 ms
64 bytes from icmp_seq=39 ttl=248 time=6.87 ms
From icmp_seq=38 Destination Host Unreachable
From icmp_seq=40 Destination Host Unreachable
64 bytes from icmp_seq=41 ttl=248 time=6.26 ms
64 bytes from icmp_seq=42 ttl=248 time=6.04 ms
64 bytes from icmp_seq=43 ttl=248 time=6.06 ms
64 bytes from icmp_seq=44 ttl=248 time=6.55 ms
64 bytes from icmp_seq=45 ttl=248 time=6.07 ms
64 bytes from icmp_seq=46 ttl=248 time=7.29 ms

When I check on the slave peplink log, mac conflict occur every 1 minute stating that packet come from the master peplink.(.12)

Apr 09 18:57:27 MAC address conflict: Received an ARP packet claiming to be from our MAC address 00:00:5E:00:01:01, but with an unknown IP (

How this happen since the slave peplink is in disable mode.

Kindly help me find the root cause of this problem.

Please let me know if more information is needed.

Thank you.



@Acoda, base on the described scenario, I would think the first thing to check will be the physical network connectivity between the Peplink and the connected devices.

If you are purchasing from our certified partner, then it is worth to contact the purchase point to help you to inspect your HA setup. Or, you may open a support ticket here with the above-mentioned information for our Support Team investigation.