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Groups > linux.debian.user > #240055

Re: Can surf the internet, but not my home network...

From David Christensen <dpchrist@holgerdanske.com>
Newsgroups linux.debian.user
Subject Re: Can surf the internet, but not my home network...
Date 2021-09-16 20:20 +0200
Message-ID <CY49j-2aA-7@gated-at.bofh.it> (permalink)
References <CXEHT-2F1-1@gated-at.bofh.it> <CXFkB-2S3-7@gated-at.bofh.it> <CXUjD-3ZU-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 9/16/21 12:40 AM, Andrei POPESCU wrote:
> On Mi, 15 sep 21, 17:48:39, Hans wrote:
>> Am Mittwoch, 15. September 2021, 16:41:21 CEST schrieb nimrod:
>> Hi,
>>
>> got the same problem, when the ethernet interface is up, too and I am on wifi.
>> This a problem with the gateway settings.
> 
> Unless my understanding of local networks is wrong, the gateway is not
> involved in communication between hosts in the same subnet.


Many residential/ SOHO Internet gateways a combination devices -- 
firewall, router, DHCP server, DNS caching proxy, switch, Wi-Fi access 
point, etc..


When LAN and/or Wi-Fi clients whose network interfaces are configured 
with DHCP want to communicate with each other, the gateway provides the 
information required to initiate that communication (e.g. DNS lookup, IP 
addresses, MAC addresses, etc.), in addition to switching/ sending/ 
receiving packets.  Everything should "just work".


But, a client with a manually configured network interface (e.g. "static 
IP") will be unknown to the gateway, and therefore unknown to DHCP 
clients.  The details of the manual configuration determine failure 
modes, which may be asymmetric.


"Networking for System Administrators" by Lucas is excellent:

https://mwl.io/nonfiction/networking#n4sa


David

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Thread

Can surf the internet, but not my home network... nimrod <nimrod@virgilio.it> - 2021-09-15 17:10 +0200
  Re: Can surf the internet, but not my home network... IL Ka <kazakevichilya@gmail.com> - 2021-09-15 17:20 +0200
  Re: Can surf the internet, but not my home network... Hans <hans.ullrich@loop.de> - 2021-09-15 17:50 +0200
    Re: Can surf the internet, but not my home network... IL Ka <kazakevichilya@gmail.com> - 2021-09-15 18:00 +0200
    Re: Can surf the internet, but not my home network... Andrei POPESCU <andreimpopescu@gmail.com> - 2021-09-16 09:50 +0200
      Re: Can surf the internet, but not my home network... David Christensen <dpchrist@holgerdanske.com> - 2021-09-16 20:20 +0200
        Re: (unable to start a new discussion) Re: Can surf the internet,  but not my home network... Greg Wooledge <greg@wooledge.org> - 2021-09-17 01:00 +0200
        Re: Can surf the internet, but not my home network... Andrei POPESCU <andreimpopescu@gmail.com> - 2021-09-17 01:10 +0200
        Re: (unable to start a new discussion) Re: Can surf the internet,  but not my home network... Charles Curley <charlescurley@charlescurley.com> - 2021-09-17 06:20 +0200
          Re: (unable to start a new discussion) Re: Can surf the internet,  but not my home network... <tomas@tuxteam.de> - 2021-09-17 08:30 +0200
            Correction [was: unable to start a new discussion] <tomas@tuxteam.de> - 2021-09-17 08:30 +0200
          Re: (unable to start a new discussion) Re: Can surf the internet,  but not my home network... Brian <ad44@cityscape.co.uk> - 2021-09-17 10:50 +0200
            Re: (unable to start a new discussion) Re: Can surf the internet, but not my home network... Gene Heskett <gheskett@shentel.net> - 2021-09-17 13:10 +0200
              Re: (unable to start a new discussion) Re: Can surf the internet, but not my home network... Stefan Monnier <monnier@iro.umontreal.ca> - 2021-09-17 15:20 +0200
                Re: (unable to start a new discussion) Re: Can surf the internet, but not my home network... Gene Heskett <gheskett@shentel.net> - 2021-09-17 16:40 +0200
            Re: (unable to start a new discussion) Re: Can surf the internet, but  not my home network... David Christensen <dpchrist@holgerdanske.com> - 2021-09-17 21:30 +0200
              New thread vs. changed Subject line (was Re: (unable to start a new  discussion) Re: Can surf the internet, but not my home network...) The Wanderer <wanderer@fastmail.fm> - 2021-09-17 21:50 +0200
              Starting a new thread by replying [was: (unable to start a new  discussion)...] but not my home network... <tomas@tuxteam.de> - 2021-09-17 22:10 +0200
  Re: Can surf the internet, but not my home network... David Christensen <dpchrist@holgerdanske.com> - 2021-09-15 22:10 +0200

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