[issue20418] socket.getaddrinfo fails for hostname that is all digits 0-9

[Ariel Glenn]

Ariel Glenn added the comment:

Yes, I had checked that just in case; getaddrinfo(3) works for the all-digit hostname, returning no error.  I'm using these hints:

   memset(&hints, 0, sizeof(struct addrinfo));
   hints.ai_family = AF_UNSPEC;
   hints.ai_socktype = SOCK_STREAM;
   hints.ai_flags = AI_PASSIVE;
   hints.ai_protocol = 0;
   hints.ai_canonname = NULL;
   hints.ai_addr = NULL;
   hints.ai_next = NULL;

Tested on glibc-2.18.

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nosy: +ariel

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<http://bugs.python.org/issue20418>
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