Yesterday i connected my notebook to the internet using USB tethering on my Android 12 cell phone; my SIM is a Wind SIM, so Wind is the connection provider; for the 1st time ever (to my knowledge), the data connection was on ipv6 (only: no ipv4 added), and i discovered it was not behind any firewall at the provider (that is, Wind), and that Android 12 (i guess it's one of the latest releases) has no builtin firewall for ipv6, so, if it was not for its software firewall, any network service (1/2)
