ipv6.disable=1 # disable_ipv6=
cat > /etc/sysctl.d/70-disable-ipv6.conf <<EOF net.ipv6.conf.all.disable_ipv6 = 1 EOF sysctl -p /etc/sysctl.d/10-noipv6.conf
Si module
cat >/etc/modprobe.d/blacklist-ipv6.conf <<EOF blacklist ipv6 install ipv6 /bin/false EOF
/etc/apt/apt.conf.d/99force-ipv4
Acquire::ForceIPv4 "true";
sysctl -w net.ipv6.conf.all.disable_ipv6=1 sysctl -w net.ipv6.conf.default.disable_ipv6=1 #sysctl -w net.ipv6.conf.lo.disable_ipv6 = 1
/etc/sysconfig/network-scripts/ifcfg-eth0
IPV6INIT=no IPV6_DISABLED=yes
nmcli connection show nmcli connection modify Example ipv6.method disabled
/etc/default/grub
GRUB_CMDLINE_LINUX="ipv6.disable=1 crashkernel=auto rhgb quiet"
grub2-mkconfig -o /boot/grub2/grub.cfg grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
/etc/ssh/sshd_config
AddressFamily inet
Djava.net.preferIPv4Stack=true
/etc/systemd/system/rpcbind.socket.d/noipv6.conf
[Socket] ListenStream= ListenDatagram= ListenStream=0.0.0.0:111 ListenDatagram=0.0.0.0:111
/etc/wgetrc
# To try ipv6 addresses first: #prefer-family = IPv6
Exemple
SystemD Socket
BindIPv6Only=both
Erreur Address family not supported by protocol lors de systemctl status quand IPV6 est désactivé dans sysctl.conf.
A tester : systemctl --failed
Résolution Après avoir modifié /etc/sysctl.conf ou des fichiers dans /etc/sysctl.d/ il est nécessaire de reconstruire l'initramfs.
dracut -f -v
ifconfig | grep inet6 cat /proc/sys/net/ipv6/conf/eth0/disable_ipv6