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Forum Discussion

Furman's avatar
Furman
Aspirant
Aug 05, 2021

How to add MAC address for new iPhone

R7900P | Nighthawk X6S, Firmware Version:  V1.4.1.68_1.3.28

I replaced my old iPhone with a new one.  I have found the MAC address on the new iPhone.  I have assigned the same IP address, but how can I change the MAC address from the old one to the new one?  Thank you.

5 Replies

    • Furman's avatar
      Furman
      Aspirant

      I am asking with reference to my router interface at routerlogin.net.  As I understand it, the MAC address identifies the device.  The MAC address of my new phone is different than my old phone.  Or do I need to delete the old phone and add the new phone?

  • > [...] I have assigned the same IP address, [...]

     

       To what?  I don't know what that means.  "assigned"?  What, exactly,
    did you do, where, exactly?  Are you talking about Address Reservation,
    or Access Control, or what?

     

    > [...] how can I change the MAC address from the old one to the new
    > one?

     

       "change the MAC address" of what, where?

     

       Note that your (unspecified) "a new one" might be fiddling with its
    MAC address, and, if you're doing anything involving its MAC address,
    then you might want to disable that feature for your network.

     

          https://support.apple.com/en-us/HT211227

    • Furman's avatar
      Furman
      Aspirant

      I'm sorry, I must have started in the middle instead of at the beginning.

      I have previously gone into routerlogin.net, Advanced, Security, Access Control. 

      Access Control was turned off, but is now turned on (checked).

      There is a table there where I have assigned an IP address for each of my devices that uses my router, and typed in the MAC address for each device, in order to limit access to my network.  My old iPhone was listed, but I have now replaced it with a newer iPhone.  When I transferred data from old phone to new, the transfer must have transferred the assigned IP address.  The MAC address is preassigned when a device is manufactured, so the router would not 'know' what the MAC address is of the new phone.  So I need to go into the Netgear router's interface to input the MAC address of the new device.  I can get to the table that has that information, but it will not let me edit the MAC address.  Can you please help me know how to either edit this information, or add the new phone.  I can figure out how to delete the old one if I need to go that route (delete/add).  Thank you.

      • antinode's avatar
        antinode
        Guru

        > There is a table there where I have assigned an IP address for each of
        > my devices that uses my router, and typed in the MAC address for each
        > device, [...]

         

           I'd expect that to be under ADVANCED > Setup > LAN Setup : Address
        Reservation.  Which is unrelated to Access Control.

         

           I don't use it, so I know nothing, but, as I read the R7900P User
        Manual, Access control works with MAC addresses, not IP addresses.

         

        > [...] When I transferred data from old phone to new, the transfer must
        > have transferred the assigned IP address. [...]

         

           "must have"?  I doubt it.  The IP address is determined by the
        router, not by the iPhone.  If "transferred data" transferred the MAC
        address (which I would _not_ expect), then the router might see the same
        old MAC address, and grant it the same old IP address as always.


        > [...] The MAC address is preassigned when a device is manufactured, so
        > the router would not 'know' what the MAC address is of the new phone.
        > [...]

         

           Yes and no.  As explained in that Apple Support article, cited above,
        your new iPhone might fiddle with its MAC address in ways which you
        wouldn't expect.

         

        > [...] So I need to go into the Netgear router's interface to input the
        > MAC address of the new device.

         

           If you're using Access Control on the router, then the _first_ thing
        you should do is "Turn private address off" on the new iPhone (for any
        of the router's SSIDs which you might use), so that the new iPhone will
        always uses the same MAC address when connecting to your router using
        those SSIDs.

         

           _Then_, you'd need to use the Add or Edit control in the router's
        Access Control stuff to get the new iPhone's (now stable) MAC address
        into the "allowed devices" list.

         

        > [...] I can get to the table that has that information, but it will
        > not let me edit the MAC address. [...]

         

           Which "the table", where?  How, exactly, does it stop you from doing
        what, where?

         

        > [...] I can figure out how to delete the old one if I need to go that
        > route (delete/add). [...]

         

           I'd expect to find Add, Delete, and Edit controls in the Access
        Control stuff, and in the Address Reservation stuff.  I don't see the
        mystery, but I can't see what you're doing/seeing.

         

           Did you consider trying this radical concept (which works for some
        people):

         

              https://en.wikipedia.org/wiki/RTFM


           Visit http://netgear.com/support , put in your model number, and look
        for Documentation.  Get the User Manual (at least).  Read.  Look for
        topics like "Access Control" and "Address Reservation".  Further reading
        might not hurt, either.