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LandmarkSupport
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Member since Mar 18, 2025
Mar 26 2025
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Mar 24 2025
6:17 AM
ah ok...gotcha
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Mar 24 2025
6:10 AM
That's the thing, I know what my block is. I did a packet capture and it doesn't show any traffic moving thru the offending IP address. The weird thing is when someone gets a public IP it shows their gateway as the offending device, not the public IP of our Meraki.
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Mar 24 2025
5:53 AM
Alrighty, So still no real leads but my support keeps saying it isn't due to the Meraki. They keep saying I have a rogue DHCP server. But when I look for that error I dont see the one they mention. Now when I look up the Vlan mismatch error I see the device in question. It has a public IP and when I click on the MAC it tells me the device isn't available, even though the event pretty much just happened. MAC address lookup for manufacturer info doesn't lead me anywhere. I am tempted to block that device but I am also worried that will make things worse. There isn't anything on our network, that I have setup, that would know any public IP addresses. I am curious if this is Spectrum equipment on the other side? I just don't get how something on my LAN would know public IP blocks and hand them out.
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Mar 18 2025
9:26 AM
I do not...I have a Dell switch that's basically a dummy switch. single VLAN
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Mar 18 2025
9:21 AM
Oops thought I replied...lol..yes the MX handles our DHCP. We have 4 sites and each site the MX handles it. this is the only one acting weird.
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Mar 18 2025
9:01 AM
MX handles DHCP...
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Mar 18 2025
8:14 AM
We have our fiber and secondary coax backup in their respective WAN ports and then going to switch from next LAN port. nothing onsite runs DHCP other than the MX.
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Mar 18 2025
8:13 AM
Weird right?? and the odd thing is the error I see in the log regarding my own computer is the multiple DHCP server detected error. which my computer is not...nor is any other computer onsite. DHCP is handled by the MX so when the other user got the error yesterday...it was showing the public IP of the MX as the DHCP server and DNS.
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Mar 18 2025
8:02 AM
Greetings all!! I have an issue I cannot seem to solve nor can my Spectrum provided Meraki support. For a while now I have one site where devices are receiving public addresses. Sometimes the public IP of the MX!! Ive checked NAT and nothing there. I've checked any forwarding rules...nothing there. Support INSISTS it's someone playing a joke on me and hardcoding static addresses...but I know that's not the case. It will happen on wifi and LAN. Heck I just got onsite today and tried to get on the corporate WiFi and lo and behold I was given a public IP address. We have 2 Meraki APs and they go direct into the last two ports on our MX 68. I checked a user's laptop yesterday who was unable to hardwire and his IP was a public one but oddly enough the network name Windows gave the adapter was "WiFi 2" and it was a public network...didn't know our domain. So I am leaning more and more on something weird is going on with our APs and it's bridging the public pool with our private pool somehow. Anyone ever see anything like this???
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