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In lf_ip(), when LOG_OPT_HEXA modifier is used, there is a code to format the IP address as a hexadecimal string. This code does not properly handle cases when the IP address is IPv6. In such case, the code only prints `00000000`. This patch adds support for IPv6. For legacy IPv4, the format remains unchanged. If IPv6 socket is used to accept IPv6 connection, the full IPv6 address is returned. For example, IPv6 localhost, ::1, is printed as 00000000000000000000000000000001. If IPv6 socket accepts IPv4 connection, the IPv4 address is mapped by the kernel into the IPv4-mapped-IPv6 address space (RFC4291, section 2.5.5.2) and is formatted as such. For example, 127.0.0.1 becomes ::ffff:127.0.0.1, which is printed as 00000000000000000000FFFF7F000001. This should be backported to 1.9.
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)