this post was submitted on 16 Aug 2024
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In most cases, the router advertises the prefix, and the devices choose their own IPv6. Unless you run DHCPv6 (which really no-one does in reality, I don't even think android will use it if present).
It doesn't allow firewall bypass though, as the other commenter noted.
ok. thank you. stuff like this just made me wonder: https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7590/573_Configuring-IPv6-in-the-FRITZ-Box/
for linux etc they suggest du enable dhcpv6 and i cant figure out where they adress this in their firewalls. still learning.
Best thing to do to test the firewall is run some kind of server and try to connect to your ipv6 on that port.
Like I've said in other posts, routers really should block incoming connections by default. But it's not always the case that they do.
thanks.