A few weeks ago I started having really odd issues on my network, couldn't figure out what was causing it... rebuilt my network from the ground up and everything seemed ok... but had my atlas probe unplugged still..
yesterday plugged it back in... everything seemed ok, until this morning... every time I have a system turn on... when it starts up it says no internet (yellow triangle on the network icon in the system tray in windows)
it then goes out and shows the normal icon but still no internet, about 3 minutes later the internet workes... this happens on ALL systems on my network, wired or wifi..
well tonight I looked at the ARP table when this happened and noticed this...
C:\Users\a34FASDaa.DESKTOP-Q0D2S95>arp -a Interface: 192.168.1.100 --- 0x2 Internet Address Physical Address Type 192.168.1.1 f8-1a-67-4d-51-cc dynamic 192.168.1.25 f0-9f-c2-15-e2-40 dynamic 192.168.1.30 00-11-32-48-7d-e5 dynamic 192.168.1.67 00-11-d9-57-6a-9f dynamic 192.168.1.125 f4-81-39-e3-1d-35 dynamic 192.168.1.252 ac-63-be-84-a6-a8 dynamic 192.168.1.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 239.255.255.250 01-00-5e-7f-ff-fa static 255.255.255.255 ff-ff-ff-ff-ff-ff static
Now 192.168.1.1 is my router (a microtik routerboard routeros device) but that isn't it's MAC address.... that's a TP-Link MAC... which happens to be the vendor of the atlas probe...
now after 3 minutes the internet starts to suddenly work and boom now the ARP table shows this
Interface: 192.168.1.100 --- 0x2 Internet Address Physical Address Type 192.168.1.1 e4-8d-8c-7e-46-92 dynamic 192.168.1.25 f0-9f-c2-15-e2-40 dynamic 192.168.1.30 00-11-32-48-7d-e5 dynamic 192.168.1.67 00-11-d9-57-6a-9f dynamic 192.168.1.125 f4-81-39-e3-1d-35 dynamic 192.168.1.252 ac-63-be-84-a6-a8 dynamic 192.168.1.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 239.255.255.250 01-00-5e-7f-ff-fa static 255.255.255.255 ff-ff-ff-ff-ff-ff static
Now the MAC address is CORRECT for the router......
what in the world is the atlas probe doing? anyone else see this? The probe is plugged directly into the router's onboard switch so it's as close to the internet as you can physically get.
What would cause the ARP table to report the wrong MAC for the router but just happen to be the atlas probe's MAC then later change to the correct one within 3 minutes on its own? this is just odd... and it this started about a month ago. did they push a new code base for the probes?
I'll add that when I have no internet on these systems, I still have full LAN access (because its not routed through the router) and I can get into my router via Winbox (microtik router management UI) and from there I can access the internet fine, so the router itself can still see and talk to the internet, just things on the LAN can not until they get the right MAC for ARP somehow 3 minutes after system boot
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