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North American Network Operators Group

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Re: Sprint's slashes (was Re: Anybody from PSI?!?!?!)

  • From: Paul A Vixie
  • Date: Fri Jan 03 18:18:33 1997

> Anyway, we are unlikely to change this stuff until it gets annoying for
> ousrselves, sorry.

"Welcome to the new internet."

> On the other note - MHO is it was a Bad Idea to put these checks into the
> resolver library. No objections towards having it as an option in the code
> for primary zones in name servers, though.

We debated this for a long while.  It turns out that a lot of applications
don't check the results of the names they get back from gethostbyaddr(), and
that the architecturally pure solution would have meant letting these older
applications, and their users, burn.  I wasn't willing to do that.  There was
a CERT advisory about sendmail's queue files and PTR RRs that included \n
characters, but there was no CERT advisory about the various applications who
expand DNS names on shell command lines.  Yes, the authors of those scripts
should be shot.  (Especially whoever wrote Vixie Cron.)  But something would
have to be done about Java as well.  And who knew what else?  It was not worth
skewering the universe to maintain the purity of the design.  So, we put the
checking in at several levels.

Check out draft-andrews-dns-hostnames-03.txt for more info on this subject.
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