[Pkg-haproxy-maintainers] Bug#862780: haproxy: Please build with -DUSE_GETADDRINFO for functional IPv6 hostname lookups

[Anton Eliasson]

Source: haproxy
Version: 1.7.5-1~bpo8+1.1
Severity: normal
Tags: patch ipv6

Dear Maintainer,

Without this configuration option, haproxy cannot resolve hostnames that have only IPv6 (AAAA) records. To quote the project's README:

Recent systems can resolve IPv6 host names using getaddrinfo(). This primitive
is not present in all libcs and does not work in all of them either. Support in
glibc was broken before 2.3. Some embedded libs may not properly work either,
thus, support is disabled by default, meaning that some host names which only
resolve as IPv6 addresses will not resolve and configs might emit an error
during parsing. If you know that your OS libc has reliable support for
getaddrinfo(), you can add USE_GETADDRINFO=1 on the make command line to enable
it. This is the recommended option for most Linux distro packagers since it's
working fine on all recent mainstream distros. It is automatically enabled on
Solaris 8 and above, as it's known to work.


-- System Information:
Debian Release: 8.8
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
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