iptables-restore : iptables-restore: unable to initialize table 'mangle'

iptables-restore: unable to initializetable ‘mangle’

If you’re getting the following error on your server, iptables update might have caused this issue.

 
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[root@mon ~]# /etc/init.d/iptables start

iptables: Applying firewall rules: FATAL: Module ip_tables not found.

iptables-restore v1.4.7: iptables-restore: unable to initialize table 'mangle'

Error occurred at line: 2

Try `iptables-restore -h' or 'iptables-restore --help' for more information.

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To resolve this, check the output of iptables -L if that gives any output, save it using following command and then restart iptables as shown below.

Saving iptables rules:

[root@mon ~]# iptables -L

Chain INPUT (policy ACCEPT)

target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)

target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination         

[root@mon ~]# iptables-save > /etc/sysconfig/iptables

[root@mon ~]#  /etc/init.d/iptables restart

iptables: Setting chains to policy ACCEPT: filter          [  OK  ]

iptables: Flushing firewall rules:                         [  OK  ]

iptables: Unloading modules:                               [  OK  ]

iptables: Applying firewall rules:                         [  OK  ]

 

The issue has been sorted out. It removed the unsupported rules from iptables list.