Comment 3 for bug 1529033

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Jeffrey Honig (jchonig) wrote :

RFC1123 explicitly states that an all numeric hostname valid:

 2.1 Host Names and Numbers

      The syntax of a legal Internet host name was specified in RFC-952
      [DNS:4]. One aspect of host name syntax is hereby changed: the
      restriction on the first character is relaxed to allow either a
      letter or a digit. Host software MUST support this more liberal
      syntax.