24
submitted 1 month ago by anytimesoon@feddit.uk to c/linux@lemmy.ml

Hello,

I had a working wireguard peer on my laptop, which I didn't want anymore, so I decided to uninstall wireguard. All was well until I restarted the laptop and now I can't access the internet anymore.

I think it's because of some config left over from wireguard, but I'm not sure how to fix it.

Running pop os 22.04.

Any advice?

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[-] superkret@feddit.org 13 points 1 month ago

sudo traceroute 1.1.1.1

can show you how far your connection request gets (whether it's blocked by your pc, your router, or somewhere on the internet).
You may have to install it first.

sudo find /etc -name *wg*
find ~ -name *wg*

can help find left-over config files.

[-] anytimesoon@feddit.uk 2 points 1 month ago

All I got was wget, so this is clean

[-] CameronDev@programming.dev 8 points 1 month ago

Give the output of route, maybe there is a left over route.

[-] nanook@friendica.eskimo.com 5 points 1 month ago
[-] CameronDev@programming.dev 3 points 1 month ago

Yup, didn't read your comment properly, but that will also work.

[-] anytimesoon@feddit.uk 2 points 1 month ago

The output was pretty much the same from this as from netstat -nr

I would share it here, but I can't access the internet from that machine

[-] nanook@friendica.eskimo.com 3 points 1 month ago

@anytimesoon @CameronDev It should be as both commands do more or less the same thing, the question is your default route correct and are there any other routes that might be misdirecting your data.

[-] anytimesoon@feddit.uk 1 points 1 month ago

I'm not entirely sure which of the list is the default route is, but absolutely see my WiFi router on the list. Took a picture as recommended by @CameronDev

1000005757

[-] nanook@friendica.eskimo.com 3 points 1 month ago

@anytimesoon Assuming 192.168.1.1 is your wifi router, it looks correct. Can you ping that IP?

[-] anytimesoon@feddit.uk 1 points 1 month ago* (last edited 1 month ago)

~~Nope. Destination host is unreachable when pinging~~

I changed to a different router and can at least ping that now, but still no internet

[-] CameronDev@programming.dev 2 points 1 month ago* (last edited 1 month ago)

~~Take a photo of the output? First few lines are most important, but ideally all would be good.~~

Edit: actually, dont want to crowd the kitchen, good luck!

[-] nanook@friendica.eskimo.com 4 points 1 month ago

This is what mine looks like for contrast:
0.0.0.0 50.251.249.54 0.0.0.0 UG 0 0 0 bridge0
50.251.249.48 0.0.0.0 255.255.255.248 U 0 0 0 bridge0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

In my case, 50.251.249.54 is my gateway and .48 my broadcast. I am static routed so no NAT.

[-] nanook@friendica.eskimo.com 5 points 1 month ago

Sorry formatting is whack, Friendica does not understand tabs.

[-] CameronDev@programming.dev 1 points 1 month ago

Looks like you need to use [code] on friendica?

https://wiki.friendi.ca/docs/bbcode#code_blocks

[-] anytimesoon@feddit.uk 1 points 1 month ago

So that looks similar to what I have. Wonder why it's not working

[-] nanook@friendica.eskimo.com 4 points 1 month ago* (last edited 1 month ago)

I would look at your interface configuration and your routing, ip addr show, netstat -nr and go from there. Also might check iptables, iptables -L -n and make sure there aren't any iptable rules blocking your access.

[-] anytimesoon@feddit.uk 1 points 1 month ago

IP tables have no rules, but netstat is showing traces of WG. Two of the interface names are the same as WG config name I used

[-] nanook@friendica.eskimo.com 2 points 1 month ago

Did you try to ping the router IP, 192.168.1.1 and see if it responded?

[-] anytimesoon@feddit.uk 2 points 1 month ago* (last edited 1 month ago)

~~I did, but no response~~

I changed to a different router and can at least ping that now, but still no internet

[-] nanook@friendica.eskimo.com 3 points 1 month ago

@anytimesoon With that different router, now try a traceroute 1.1.1.1, if you get a response from the first hop, 192.168.1.1, then something is wrong with the NAT on the router or your cable service or fiber or whatever it is, is not working.

[-] anytimesoon@feddit.uk 2 points 1 month ago

Unlikely to be something wrong with that, tbh. Everything else on that network has internet access. The issue is limited to the laptop

[-] nanook@friendica.eskimo.com 2 points 1 month ago

@anytimesoon I'm a bit at a loss then. I do have a Comcast router that is weird in that ARP only works at boot time so if I plug a new device into it, it won't route for that device unless I reboot it.

[-] anytimesoon@feddit.uk 1 points 1 month ago

No worries. Thanks for your help! I'll post here if/when I find a solution

[-] bbbhltz@beehaw.org 1 points 1 month ago

Hi

Did you remove wireguard the meta package or everything wireguard installed? I don't know Pop but other distros install additional tools and configs like wireguard-dkms.

Also, if possible, after completely purging every wg you could try booting into a previous kernel on your system to see if that changes anything.

this post was submitted on 24 Nov 2024
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