Public bug reported: We are using below version of Ubuntu/kernel,
~# lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 What you expected to happen: getsockopt(fd, SOL_IP, SO_ORIGINAL_DST, sa, &salen) - should return always destination IP(connected IP). What happened instead: getsockopt(fd, SOL_IP, SO_ORIGINAL_DST, sa, &salen) is in fact sometimes returning the source IP instead the destination IP. Using getsockname() instead looks like solving the issue. For just an example: Out of 6569124 requests , 4 requests were wrong 0.000060891 % (this is just an rough estimate to give you idea on frequency) Some old reference: https://stackoverflow.com/questions/11417187/getsockopt-so-original-dst-occasionally-returns-client-address We searched in launchpad for any bug filed for this but couldn't see any. Hence filing this behavior here. Side Note: (about how we identified this behavior) We were using haproxy-version 1.8.14-1 which is using this kernel function getsockopt(fd, SOL_IP, SO_ORIGINAL_DST, sa, &salen) to get the destination IP details/connected address details. But instead we are getting very occasional source IP address instead of destination(Connected IP). ** Affects: dpkg (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1809795 Title: getsockopt(fd, SOL_IP, SO_ORIGINAL_DST, sa, &salen) is in fact sometimes returning the source IP instead the destination IP. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1809795/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
