The following reverted changes will be picked again as part of the netmgr sync with main branch. Revert "Merge branch '1996-confidential-issue-v9_16' into 'security-v9_16'" This reverts commite160b1509f, reversing changes made toc01e643715. Revert "Merge branch '2038-use-freebind-when-bind-fails-v9_16' into 'v9_16'" This reverts commit5f8ecfb918, reversing changes made to23021385d5. Revert "Merge branch '1936-blackhole-fix-v9_16' into 'v9_16'" This reverts commitf20bc90a72, reversing changes made to490016ebf1. Revert "Merge branch '1938-fix-udp-race' into 'v9_16'" This reverts commit0a6c7ab2a9, reversing changes made to4ea84740e6. Revert "Merge branch '1947-fix-tcpdns-race' into 'v9_16'" This reverts commit4ea84740e6, reversing changes made tod761cd576b.