Thomas Eizinger eacf67f2bc feat(gateway): forward queries to local nameserver (#8350) ...

The DNS server added in #8285 was only a dummy DNS server that added
infrastructure to actually receive DNS queries on the IP of the TUN
device at port 53535 and it returns SERVFAIL for all queries. For this
DNS server to be useful, we need to take those queries and replay them
towards a DNS server that is configured locally on the Gateway.

To achieve this, we parse `/etc/resolv.conf` during startup of the
Gateway and pass the contained nameservers into the tunnel. From there,
the Gateway's event-loop can receive the queries, feed them into the
already existing machinery for performing recursive DNS queries that we
use on the Client and resolve the records.

In its current implementation, we only use the first nameserver defined
in `/etc/resolv.conf`. If the lookup fails, we send back a SERVFAIL
error and log a message.

Resolves: #8221

2025-03-05 20:23:01 +00:00

..

eventloop.rs

feat(gateway): forward queries to local nameserver (#8350)

2025-03-05 20:23:01 +00:00

main.rs

feat(gateway): forward queries to local nameserver (#8350)

2025-03-05 20:23:01 +00:00