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Patrick58's avatar
Patrick58
Aspirant
Sep 24, 2019
Solved

Netgear R7000 internet port address is wrong

I have a nighthawk R7000 which gets the IP address of my ISP router (Drei router). I use No-Ip for DDNS. Some days ago I noticed that the internet port in the router settings shows a different IP add...
  • antinode's avatar
    antinode
    Sep 25, 2019

    > Drei Router: model b715s-23c

     

       That's a Huawei unit?

     

    > It's in bridge mode because I put it in. [...]

     

       How, exactly?

     

    > [...] my netgear router doesn't get the public ip at the internet
    > port.

     

       If the R7000 WAN/Internet interface is configured as BASIC >
    Internet > Internet IP Address : Get Dynamically from ISP, then the
    WAN/Internet address of the R7000 is determined by whatever is connected
    to its WAN/Internet port.  If that address something like "10.209.x.y",
    then the fault lies with the "a drei Router" or with your ISP.

     

    > [...] First I paid for a static ip address and it worked (static
    > address was at the internet port) but now I changed back to a dynamic
    > public ip [...]


       Better late than never, I suppose.

     

       That could explain it.  When you had a static address, I'd guess that
    your ISP gave you a static public address.  Now that you have a dynamic
    address, I'd guess that your ISP is using "Carrier-grade NAT", and it's
    giving you a private (CGN) address, not a public address.

     

    > The ip adress of the internet port is 10.209.XX.XXX

     

       That one.  (It's a private address, so there's no need to hide any of
    it.)

     

          https://en.wikipedia.org/wiki/Carrier-grade_NAT

     

    > I know what the ip address of my drei router is [...]

     

       Do you?  How, exactly?  If it's really "in bridge mode"?  Did your
    "my drei router" tell you that, or is that what you got from the DDNS
    service (or some site like https://whatismyipaddress.com)?


       As usual, showing actual actions (commands) with their actual results
    (error messages, LED indicators, ...) can be more helpful than vague
    descriptions or interpretations.  How you arrived at your conclusion may
    be more important than what your conclusion is.

     

    > [...] I dont understand why it doesn't assign it to my netgear router
    > like it did when I had a static ip address.

     

       Ask your ISP about "Carrier-grade NAT".  If your "my drei router" is
    really "in bridge mode", then I would expect it to be too stupid to
    assign anything to anyone.  All it would do would be to let your R7000
    talk directly to your ISP, and _that_ is who would determine the
    WAN/Internet IP address of the R7000.  In this case, the R7000 appears
    to be the victim, not the perpetrator.