Why is the kernel ignoring a TCP reset?

Solution Verified - Updated -


  • We have a system running 2.6.32-504.23.4.el6.x86_64. On this system a connection to the server is showing up as ESTABLISHED while the server had sent a RST couple of hours back. We wanted to know if there is a known issue due to which the Kernel does not handle RST correctly.


  • Red Hat Enterprise Linux
    • kernel-2.6.32-504.23.4.el6
    • kernel-2.6.32-754.17.1.el6
  • Non-RHEL remote end, including:
    • Oracle Server running AIX 6.1 TL-07 SP-2
    • Third-party connection-tracking device such as firewall or load balancer

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