Re: [DNSOP] draft-lewis-domain-names-00.txt

[Robert Edmonds <[e-mail]>]

Stephane Bortzmeyer wrote:
> If you want a nice example of a domain name which is not a DNS name,
> add in your /etc/hosts (or equivalent for your OS):
> 
> 104.20.1.85 veryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongname.example.com
> 
> It is not a DNS name (first label is too long) but it works fine for
> several applications which expect domain names:

Those applications probably use the getaddrinfo() function for name
lookup, and specifications for that function [0,1,2] don't specify a
length limit for the 'nodename' parameter.

[0] http://pubs.opengroup.org/onlinepubs/9699919799/functions/freeaddrinfo.html

[1] http://tools.ietf.org/html/rfc3493#section-6

[2] https://msdn.microsoft.com/en-us/library/windows/desktop/ms738520(v=vs.85).aspx

-- 
Robert Edmonds