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jazric11's avatar
jazric11
Follower
Mar 03, 2022

R6700v3 fails to connect to device on reserved address

I have a Raspberry PI3 attached via RJ45 to the Nighthawk router.  Randomly my connection to the PI stopped in the middle of watching a video (PI connected to a NAS drive serving up video via Plex server).  PI3 has a reserved address.  Hard restarts on the PI3 would not fix the problem.  The Nighthawk refused to connect to the PI3.  Restarts on the Nighthawk did not fix the problem either.  I was preparing to do a full rebuild on the PI3.  Related, my girlfriend called me to tell me that her printer stopped working.  I conveniently installed the same router at her place to lighten my support load.  Similar issue, the Nighthawk could not see the printer with a reserved IP.  After an hour of frustration I decided to change the reserved IP address I assigned to the Printer on the Nighthawk.  Low and behold suddenly the Printer appeared and worked perfectly.  I changed the reserved IP back to the original on the Nighthawk and everythings fine.  I decided to do the same with my PI3 and everything is now working perfectly.

 

What the hell is going on?  Is this a known issue?  It's not something that is easily searchable on the community.

1 Reply

  • michaelkenward's avatar
    michaelkenward
    Guru - Experienced User

    It might help if you told people what the modem is in front of this router, if there is one. The model number could be useful. Is it, by any chance, also a router, with a set of LAN ports on the back

     


    jazric11 wrote:

     

    PI3 has a reserved address. 

     


    I assume that this IP is reserved on the router.

     

    Is it possible to give the Pi a static address instead? Or even as well?

     



    The Nighthawk refused to connect to the PI3. 


    It helps to troubleshoot if I think of it the other way round. The only thing the router connects to is the Internet. Then things, like the Pi, connect to the router.