HI all - I am new to the community and wanted to see if anyone here can answer some questions i have about my wireless network.

I am not having alot of trouble persay, but I do see things that don't make sense and thought I could ask people that are more knowlegeable than I about setting and operating wifi networks at home.

When I look at the DHCP section in my routers online interface, I can see two sections, one says Client List and the other says Address Reservation.

In my client list, I can see two entries for my laptop (a windows 7 machine), one entry has the matching mac address and IP address that I can see on the machine, but that entry is NOT PERMANENT.  The other entry says it is PERMANENT, but has a completely different mac address and IP address that DOES NOT MATCH what my laptop actually tells me it has.

I have other questions also..... for example, I try to put an entery in the address reservation section so that the device i'm adding gets the same IP address all the time, but that does not seem to work..... 

Any one have any thoughts on this?

I also am using a TP-LINK WIFI Extender AND my router is behind a cable modem.