14:00 the router expires the lease attributed to alice.10:30 alice goes in the living which is on the border of the wireless network and loose her connexion, but she doesn't care because she is just wotking on a heavy presentation with Keynote.10:00 alice get address 10.0.2.1 from the router, with a lease time of 4 h.If the same IP address is regularly attributed to 2 different equipments connected through Wi-Fi, this may be caused by a poor quality wireless connectivity. For example on an iPhone, if your home network is named home_Wi-Fi this is: Settings > Wi-Fi > home_Wi-Fi > DHCP > Renew lease Just check that this equipment is actually within reach of your routerĪnd make it renew its DHCP lease. If this MAC address belongs to one of your equipment Look at your router ARP table and note the MAC address associated with Note your actual address, let's say it is 10.0.2.1. So it is likely that there is a device on your network NOT set to DHCP.Ĭheck on your router which other computer or phone is using your IP address.

It is supposed to hand out all that info automatically. Keeping track can be a pain, which is why we have DHCP. It would be a good idea, if you do this, to make a note of all the settings and which device gets which address. Record the subnet mask, gateway and DNS servers. Select the connection (WiFi) and click Advanced, then the TCP/IP and DNS buttons. The last three should be listed in your network System Preference and will be the same on all devices (only the IP address must be different).

Your Gateway is likely 192.168.1.1 (your cable modem or WiFi access point)

Unique (only one device has any one number) Change the WiFi password just in case.įailing all of that assign everything a static IP address like this Make sure all are different and all are on DHCP.ĪLSO possible, someone unwanted is on your network. HOWEVER it is possible that you have manually assigned an IP address to one or more devices, so check for that. So every device should get a unique address And your router should only hand out ones that are unused. Often times these issues can be solved by rebooting ALL computers (iPhones, Macs, etc.) on your local LAN.

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