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From: Christopher Friedt <chrisfriedt@gmail.com>
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Subject: Re: getaddrinfo(3) / AI_ADDRCONFIG
Date: Tue, 10 Jul 2018 19:30:05 -0400
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On Tue, Jul 10, 2018 at 7:21 PM Christopher Friedt
<chrisfriedt@gmail.com> wrote:
> test.c, output, strace log, and ifconfig -a output here:
>
> https://pastebin.com/UmJi02px

So it's definitely returning an IPv4 socket (which Thrift throws away
in favour of the IPv6 socket). Since no adapter has the IPv6 address
returned,  bind(2) would fail on a subsequent call.

After applying the patch [1] to musl,

# ./test -v
struct addrinfo {
   ai_flags:        0
   ai_family:       2
   ai_socktype:     1
   ai_protocol:     6
   ai_addrlen:      16
   ai_addr:
      family:       2
      addr:         127.0.0.1
      port:         0
   ai_canonname:    localhost
   ai_next:         0
}

[1] https://patch-diff.githubusercontent.com/raw/cfriedt/musl/pull/1.diff