Mystery MAC Address in Router Log

[DragonFyre]

I am running a Asus RT-AC68U with Merlin 378.55

I am seeing the following log entrys in my firewall for a Wired ethernet device i cannot locate connected to the router or the trendnet dumb switch set up

Jan 25 22:01:47 dnsmasq-dhcp[27284]: DHCPDISCOVER(br0) 192.168.1.18 00:03:ff:79:de:c6
It is pulling a local ip address of 192.168.1.18 and disappears shortly after i open the network map.

The first of the MAC shows to belong to Microsoft.

I am kinda at a loss here.

Log Example
Jan 25 22:01:47 dnsmasq-dhcp[27284]: DHCPDISCOVER(br0) 192.168.1.18 00:03:ff:79:de:c6
Jan 25 22:01:47 dnsmasq-dhcp[27284]: DHCPOFFER(br0) 192.168.1.18 00:03:ff:79:de:c6
Jan 25 22:01:47 dnsmasq-dhcp[27284]: DHCPREQUEST(br0) 192.168.1.18 00:03:ff:79:de:c6
Jan 25 22:01:47 dnsmasq-dhcp[27284]: DHCPACK(br0) 192.168.1.18 00:03:ff:79:de:c6 qwqqwqw-729377c
Jan 25 22:02:27 dnsmasq-dhcp[27284]: DHCPINFORM(br0) 192.168.1.18 00:03:ff:79:de:c6
Jan 25 22:02:27 dnsmasq-dhcp[27284]: DHCPACK(br0) 192.168.1.18 00:03:ff:79:de:c6 qwqqwqw-729377c
Jan 25 22:03:06 miniupnpd[2280]: upnp_event_process_notify: connect(192.168.1.18:2869): Connection timed out
Jan 25 22:03:06 miniupnpd[2280]: upnp_event_process_notify: connect(192.168.1.18:2869): Connection timed out
Jan 25 22:03:06 miniupnpd[2280]: upnp_event_process_notify: connect(192.168.1.18:2869): Connection timed out

 

[SnakeByte]

According to this site:
http://aruljohn.com/mac/0003FF

The "manufacturer" for that device is Microsoft. That would make that device a virtual machine.

 

[DragonFyre]

Yep that was it, Thank You so much