Tag Archives: disable

Disable IPv6 Linux (CentOS)

If you want to disable IPv6 in linux, You just follow below step.   # vi /etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1   # vi /etc/postfix/main.cf inet_protocols = ipv4   #sudo sysctl -p /etc/sysctl.conf #postfix reload   When you see this message “postfix/pickup[xxxxx]: fatal: parameter inet_interfaces: no local interface found for ::1” vi /etc/hosts

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