wireguard kill switch and internet connection fails

[Member ATGhQlsvhij19tw5jgDi]

Hi everyone,
I guess this is for experts.
I am following this guide:
https://mullvad.net/en/help/wireguard-and-mullvad-vpn/
I have replaced the default resolvconf with openresolv as it appears that wireguard does not go well with resolvconf.
If I follow the guide and I add:

PostUp  =  iptables -I OUTPUT ! -o %i -m mark ! --mark $(wg show %i fwmark) -m addrtype ! --dst-type LOCAL -j REJECT && ip6tables -I OUTPUT ! -o %i -m mark ! --mark $(wg show %i fwmark) -m addrtype ! --dst-type LOCAL -j REJECT
PreDown = iptables -D OUTPUT ! -o %i -m mark ! --mark $(wg show  %i fwmark) -m addrtype ! --dst-type LOCAL -j REJECT && ip6tables -D OUTPUT ! -o %i -m mark ! --mark $(wg show  %i fwmark) -m addrtype ! --dst-type LOCAL -j REJECT

my machine’s dns resolver stop working I guess. I say so because if I try to connect to a domain it fails, whereas if I try to connect/ping a public IP it works.

The issue is present regardless if I use resolvconf or openresolv.

Probably the kill switch rules create the issue.

PS I have ufw enabled with the default configuration

$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

Hope someone could guide me with this 🙂

Thanks!

A.

• This topic was modified 11 months ago by ATGhQlsvhij19tw5jgDi.
• This topic was modified 11 months ago by ATGhQlsvhij19tw5jgDi.

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