[Nix-dev] Internet Issue

[Pavel Chuprikov]

Hi,

Am I correct, that your computer's IP is 192.168.0.19 (you can check it
with *ip addr*)? It doesn't seems so, since there are no ARP replies from
(presumably) your router.
If it is, then for starters I would suggest to find the guy who sends UDP
broadcast on port 75. To do this you can use *netstat* and check for any
suspicious activity*:*
*# sudo netstat --all --udp -4 --program*

Also, check that your computer doesn't run dhcp server, that could misguide
other clients.

At home you can try to run wireshark to find out what happens with HTTP
requests or you better follow some basic network troubleshooting guides
like this <https://ubuntuforums.org/showthread.php?t=25557> one or this
<http://searchnetworking.techtarget.com/tip/Wireless-network-troubleshooting-Connectivity>
one, or, maybe, this
<http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch04_:_Simple_Network_Troubleshooting#.V-pukXV95vA>
one.

--
Pavel


вт, 27 сент. 2016 г. в 10:05, Taeer Bar-Yam <tb442 at cornell.edu>:

> Okay, I got wireshark. I ran it (with sudo) and hit analyze on the wifi
> network. I've attached a screenshot of the results. There are definitely
> some fishy things going on. Let me know if you need other diagnostic
> information. Sorry, I've never done much with network connections before.
> Thanks for the help!
>   --Taeer
>
> Excerpts from Tomasz Czyż's message of September 23, 2016 11:51 am:
> > whireshark is your friend
> >
> > 2016-09-23 16:46 GMT+01:00 Taeer Bar-Yam <tb442 at cornell.edu>:
> >
> >> It *seems* as though my computer is breaking the internet for other
> >> people. Sometimes at home the internet cuts out (not the wifi, that
> still
> >> connects; but webpages do not load on anyone's computers). This also
> >> happens at my friend's house, but not the on-campus wifi network. It
> >> appears to only happen when I am there and try to connect to the
> internet,
> >> but it doesn't always happen when I try to connect to the internet.
> >>
> >> Is it possible that my computer is responsible? What would be causing
> that?
> >>
> >> I am using NixOS 16.03 stable and my internet setup is:
> >> ```
> >> networking.hostName = "rebel";
> >> networking.networkmanager.enable = true;
> >> ```
> >> and I'm using ```nmtui connect``` to connect to the wifi network
> >>
> >> let me know if there's any other relevant information I should send.
> >>
> >>  --Taeer
> >> _______________________________________________
> >> nix-dev mailing list
> >> nix-dev at lists.science.uu.nl
> >> http://lists.science.uu.nl/mailman/listinfo/nix-dev
> >>
> >
> >
> >
> > --
> > Tomasz Czyż
> >
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>
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