After upgrading to linux kernel 3.0.0, my haproxy stopped working. By using debug option, I find that transparent with usesrc client stopped working. It alters:
[ALERT]: Cannot bind to source address before connect() for proxy %s. Aborting. It worked correctly when I was using kernel 2.6.29. So that I checked into source code, and find that in src/proto_tcp.c:141, bind() returned 97 (EAFNOSUPPORT). I can't understand why it failed after successfully setsockopt(..., IP_TRANSPARENT, ...). Since perror says "Address family not supported", I find that after memset() bind_addr to 0 at src/proto_tcp.c:132, bind_addr.sin_family is uninitialized. After I add bind_addr.sin_family = AF_INET; below memset(), recompile haproxy then it works again. -- System Information: Debian Release: wheezy/sid APT prefers unstable APT policy: (500, 'unstable'), (101, 'experimental') Architecture: i386 (i686) Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores) -- Sincerely, Yang Zhe