good address will not resolve in freebsd (_ in host names)

Andi Hechtbauer anti at
Tue Oct 7 11:48:09 PDT 2003

Just FYI,

Restrictions on hostname character sets seem obsoleted by this:

>From RFC2181, Section 11

   [...] any binary string whatever can be used as the label of any
   resource record.  Similarly, any binary string can serve as the
   value of any record that includes a domain name as some or all of
   its value (SOA, NS, MX, PTR, CNAME, and any others that may be
   added).  Implementations of the DNS protocols must not place any
   restrictions on the labels that can be used.  In particular, DNS
   servers must not refuse to serve a zone because it contains labels
   that might not be acceptable to some DNS client programs. [...]


"Yes, but where do you think the chaos came from?"

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