Tag Archives: IPv6

How to disable ipv6 in Debian

Here are simple steps to disable ipv6 in Debian:

  1. Comment out anything related to ipv6 in /etc/hosts
  2. SSH. Ensure AddressFamily inet is set in/etc/ssh/sshd_config. Restart ssh.
  3. BIND. Ensure listen-on-v6 { none; }; in/etc/bind/named.conf.options. Restart bind9.
  4. NTP. Ensure -4 option is set in /etc/default/ntp (e.g. NTPD_OPTS=’-4 -g’). Restart ntp.
  5. APACHE2. Ensure Listen in/etc/apache2/ports.conf file. Restart apache2.

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