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Why do all my devices have the same IP address?
This IP address is provided by your ISP and is assigned to the device that your modem is connected to, which is typically your router. Therefore, all devices connected to the router (whether wired or wirelessly) will share the same external IP address.
How do I fix duplicate IP address?
To resolve it, convert the network device with the static IP address to a DHCP client. Or, you can exclude the static IP address from the DHCP scope on the DHCP server.
Why do I keep getting the same IP address?
If you disconnect and then reconnect, you get an IP address again. You might get the same address again because an IP address has a lease time associated with it. The lease time can vary from device to device, but it’s pretty common for home routers to set it to 24 hours.
What’s the default address for a Raspberry Pi?
Just under the topic Making a network connection work it says: Other computers will often give themselves a default address (in the address range 169.254.0.0 – 169.254.255.255) but the Raspberry Pi doesn’t do this (yet). Besides even if the Raspberry Pi did, we would still need to know what address it had picked to be able to connect to it!
Where does the other IP address come from?
The other IP address is the IP address your Internet Service Provider allocates to your modem/router from a pool of IP addresses available to the ISP. The pool of IP addresses available to your ISP is shared among the homes in your neighborhood. Addresses from this pool are usually granted to home modem/routers for 24 hours at a time.
Can a router still recognize the same IP as before?
For your router it’s not important what you are doing with the device exactly. It just recognizes the MAC and provides the same IP as before. Edit: As Beege pointed out, the IP can still change as the ‘D’ in DHCP stands for dynamic.