Debian désactiver IPv6
#1. Open a terminal window.
#2. Issue the command sudo nano /etc/sysctl.conf
#3. Add the following at the bottom of the file:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
#4. Save and close the file.
#5. Reboot the machine.
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