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Test
https://ipv6test.google.com/
Disable IPv6
# disable IPv6 echo 1 > /proc/sys/net/ipv6/conf/eth0/disable_ipv6 echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6 echo "net.ipv6.conf.all.disable_ipv6 = 1" > /etc/sysctl.d/01-disable-ipv6.conf # grub: /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1" update-grub # sysctl sudo echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.d/01-disable-ipv6.conf sudo echo "net.ipv6.conf.default.disable_ipv6 = 1" >> /etc/sysctl.d/01-disable-ipv6.conf sudo echo "net.ipv6.conf.lo.disable_ipv6 = 1" >> /etc/sysctl.d/01-disable-ipv6.conf sysctl -p /etc/sysctl.d/01-disable-ipv6.conf sudo sed -i 's|udp6|#udp6|g' /etc/netconfig sudo sed -i 's|tcp6|#tcp6|g' /etc/netconfig
Get public IPv6
wget -q http://checkipv6.dyndns.com/ -O-
Links
https://askubuntu.com/questions/309461/how-to-disable-ipv6-permanently/337736#337736
https://www.iway.ch/ueber-iway/blog/internet-protokoll-ipv6/
https://ipv6-test.com/