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As per 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. Without this option, it is not possible for HAProxy to solve IPv6-only names. This option is enabled in Debian builds without any notable adverse effect. |
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