iptables and iptables-save segfault on RHEL 8.4

Solution Verified - Updated -


  • iptables and iptables-save segfault on RHEL 8.4
  • Segmentation faults logged such as:
iptables[PID]: segfault at 80 ip 00007f4b7a817964 sp 00007fffbbad7c28 error 4 in libnftnl.so.11.2.0[7f4b7a812000+19000]


  • Red Hat Enterprise Linux 8.4 (kernel-4.18.0-305.el8)
  • Third-party container solution such as Docker CE or EE, Rancher, Kubernetes, Calico, Flannel, Cilium, etc
  • Ubuntu 20.04-based container image managing firewall rules

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