Ethernet devices being assigned WI-Fi Range IP addresses - How do I keep the subnets separate?
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Gertjan,
To answer your questions:
You have a Wifi adaptor "playing" AP on a LAN type interface (OPTx), and a classic NIC being LAN, right ? YES
Both are separated networks, right ? YES
Both have separated DHCP servers assigned, right ? YES
And thus separated pools ! YESI am moderately confident that this question has been asked before, but I am currently stumped:
I have a desktop I-5 computer with a built in Atheros Wi-Fi adapter.When I configure DHCP to use this adapter, and the primary NIC, with a different subnet range I do get Wi-Fi addresses from devices attached to the Wi-Fi devices.
however:When leases for Ethernet devices expire, those Ethernet devices are being assigned addresses that should have been assigned to WI-Fi devices.
How do I keep DHCP from assigning Wi-Fi addresses to Ethernet devices?
This is the real crux of the problem: I am using a Google Mesh for Wi-Fi and it is not allowing me to access my LG TV from my Galaxy Note 9 phone.
I was hoping to use the internal Atheros adapter in the router to set up an access point. This works, but I am having IP assignment problems when it is attached. -
You have a Wifi adaptor "playing" AP on a LAN type interface (OPTx), and a classic NIC being LAN, right ?
Both are separated networks, right ?
Both have separated DHCP servers assigned, right ?
And thus separated pools !And AP is nothing more as a "Radio traffic" to "electric over cable traffic" converter. The DHCP server can not know if a device is connected over Wifi (radio) and then over wire (== electric) : for the server, it's all the same ....
If you need to have some devices always have the same IP, use the static MAC DHCP lease facility.
When a devices uses another network, thus other DHCP server, thus other pool, the IP will be different.
Most probably I didn't understand the question ...
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@Gertjan said in Ethernet devices being assigned WI-Fi Range IP addresses - How do I keep the subnets separate?:
Most probably I didn't understand the question ...
That makes two of us. I have a notebook computer here which I use on either Ethernet or WiFi. It gets different IP addresses, according to how it's connected. That's entirely normal. If WiFi is on a different subnet, how could an Ethernet device, get an address from the other subnet, unless he has something configured wrong.
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Yes, that is my question. Most likely I DO have something configured incorrectly.
What is happening is this:I have a pool for Ethernet on LAN set for 192.168.1.5 - 192.168.1.150
The Wifi address is set to 192.168.5.1/24
I have a DHCP pool for Wifi set for 192.168.5.2 - 192.168.5.100Wi-fi devices are receiving addresses in the correct range of 192.168.5.2 - 192.168.5.100
OCCCASIONALLY devices on the LAN are receiving addresses from the the WI-Fi DHCP pool range even though they are on ethernet (wired line)
Note: Simply moving the laptop from Wi-Fi to Lan and back does not cause this issue. The lease has to expire before the misdirection occurs.
How is this even possible? I did not think there was a method that would allow DHCP to be unaware of the physical connection.
I am obviously missing something fundamental here.
I looked at the DORA interaction, and yes the PFSense is offering newly connected Ethernet devices addresses in either the first or second subnet equally.Is the Wiireless mode supposed to be set to "Access Point", Infrastructure (BSS), or AdHoc (IBSS). - I had assumed it would be Access Point
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@mkammer said in Ethernet devices being assigned WI-Fi Range IP addresses - How do I keep the subnets separate?:
OCCCASIONALLY devices on the LAN are receiving addresses from the the WI-Fi DHCP pool range even though they are on ethernet (wired line)
If an interface is activated and 'hooked up' it is normal that your PC has a 192.168.1.x LAN IP and at the same time an IP like 192.168.5.y at the Wifi Interface.
Your PC has TWO IP's at that moment. Not a problem at all.
At any time, only one of these interfaces (IP's) also has it's gateway activated, or to be more precise : it's metric value is higher then the other interface, so it will be used in priority.Normally, when you are at home, and wired up (cable) you shut down ( there is a key on the keyboard for this ) the Wifi.
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@Gertjan said in Ethernet devices being assigned WI-Fi Range IP addresses - How do I keep the subnets separate?:
Normally, when you are at home, and wired up (cable) you shut down ( there is a key on the keyboard for this ) the Wifi.
I have never done that. I just rely on the metric. Also, with Linux, unlike Windows, the WiFi address is still reachable via the Ethernet port. So, if I ping the WiFi address, while connected with Ethernet, the ping goes in via Ethernet. I have verified that with Wireshark.
