[Discuss] PIVPN DNS problems -- I think

[me at mattgillen.net (Matthew Gillen)]

On 6/9/2023 11:55 AM, Rich Pieri wrote:
> I'm trying to upgrade my Pi VPN box from an old Pi 2/32-bit to a new Pi
> 4/64-bit using PIVPN and Wireguard. I followed the backup, new setup,
> and restore instructions. My endpoints connect to the new server and I
> see traffic (pivpn -c) but all DNS lookups fail. This is setting either
> my internal DNS (pi-hole) or 1.1.1.1 in the Wireguard configuration on
> the endpoint.
> 
> Everything in /etc/wireguard is copied verbatim.
> 
> Everything in /etc/pivpn/wireguard/setupVars.conf matches other than
> the OS-specific information.
> 
> Any suggestions?

Firewall config?

Start with a tcpdump on the wireguard interface to see if the DNS 
request is making it to the pivpn box.

Thanks
Matt