Well, what I do is disable ipv6. I don't want the possibility that this is misconfigured, especially if the defaults tend to be wrong. Maybe my router doesn't e

Well, what I do is disable ipv6. I don't want the possibility that this is misconfigured, especially if the defaults tend to be wrong. Maybe my router doesn't even respect my firewall settings, like this: https://community.verizon.com/t5/Fios-Internet-and-High-Speed/IPv6-firewall-on-Fios-router-is-allowing-inbound-connections/td-p/1573464 https://community.verizon.com/t5/Fios-Internet-and-High-Spee... Maybe the customer is wrong, but this shouldn't even be a question. The rare times I want something publicly accessible, I use DMZ or port forwarding.