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anytimesoon via Linux 4 months ago • lemmy

Can't access internet after wireguard uninstall

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?

23 1 1

Nanook 4 months ago friendica (DFRN)

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.

This entry was edited (4 months ago)

Shoreline, WA, USA

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anytimesoon 4 months ago • lemmy

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

superkret 4 months ago • lemmy

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.

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anytimesoon 4 months ago • lemmy

All I got was wget, so this is clean

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CameronDev 4 months ago • lemmy

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

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Nanook 4 months ago friendica (DFRN)

@CameronDev @anytimesoon This is why I suggested netstat -nr

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CameronDev 4 months ago • lemmy

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

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anytimesoon 4 months ago • lemmy

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

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Nanook 4 months ago friendica (DFRN)

@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.

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anytimesoon 4 months ago • lemmy

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

Nanook 4 months ago friendica (DFRN)

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

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anytimesoon 4 months ago • lemmy

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

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

This entry was edited (4 months ago)

CameronDev 4 months ago • lemmy

~~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!

This entry was edited (4 months ago)

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Nanook 4 months ago friendica (DFRN)

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.

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Nanook 4 months ago friendica (DFRN)

Sorry formatting is whack, Friendica does not understand tabs.

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anytimesoon 4 months ago • lemmy

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

CameronDev 4 months ago • lemmy

Looks like you need to use on friendica?

wiki.friendi.ca/docs/bbcode#co…

Friendica BBCode tags reference - Documentation [Friendica / Wiki]

^{wiki.friendi.ca}

Nanook 4 months ago friendica (DFRN)

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

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anytimesoon 4 months ago • lemmy

~~I did, but no response~~

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

This entry was edited (4 months ago)

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Nanook 4 months ago friendica (DFRN)

@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.

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anytimesoon 4 months ago • lemmy

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

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Nanook 4 months ago friendica (DFRN)

@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.

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anytimesoon 4 months ago • lemmy

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

bbbhltz 4 months ago • lemmy

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.