Package: dns2tcp
Version: 0.4.dfsg-5.1
Severity: grave

Does anyone actually use this package? Either it is heavily broken or I
am doing something wrong.

I set up dns2tcpd and a NS record as described in the documentation.
However calling dig -t NS on the subdomain times out for the vast
majority of name servers I tried. A timeout also indicates that it is
not a caching problem. So I went on to see what's happening and
installed tcpdump. It seems like many nameservers want to verify NS
records by querying the target server (dns2tcpd). Unfortunately dns2tcpd
has no handling for these requests, so it simply drops them. The asking
nameserver then believes that dns2tcpd is unreachable and does not
forward queries.

Working out a patch for this shouldn't be difficult (famous last words),
as it is "only" like handling a new packet type and answering it with
information provided in the configuration file.

During my research I actually found a (one) public dns server that does
not do this kind of NS checking. In most use cases of dns2tcp one will
not be able to choose a dns server though.

Helmut



-- 
To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org

Reply via email to