planetf1, 25 days ago

@nixCraft Agreed good to know. I do get frustrated when so many see disabling v6 as the answer to all their problems… And still amazing how many sites/ ISPs (at least for home users) don’t support yet. For me proper dual-stack is non-negotiable in isp choice!

nyx, 25 days ago

@nixCraft
I'm a bit puzzled. If I disable/enable v6 for "all", why is it necessary to also do the same for "default"?

(referring to:
sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
sudo sysctl -w net.ipv6.conf.default.disable_ipv6=0 )

nixCraft, 25 days ago

@nyx net.ipv6.conf.default.disable_ipv6 is used to set on any interfaces that are created after the change.

net.ipv6.conf.all.disable_ipv6 set all interfaces, including both existing and newly created ones

If you want to disable IPv6 completely and permanently , you must set both parameters to 1.