>> Sorry if I'm slow, but isn't that a chicken-and-egg problem? Normal DoT/DoH problem has bootstrap DNS setting, you always need to set a bootstrap DNS server to resolve the DoT/DoH domains, so this is not a problem.
-----Original Message----- From: Bjørn Mork <bj...@mork.no> Sent: Tuesday, March 1, 2022 3:57 AM To: David Guo <da...@xtom.com> Cc: nanog@nanog.org Subject: Re: Certificates for DoT and DoH? David Guo <da...@xtom.com> writes: > You don't need a certificate for your IP address if your DoT and DoH > use domains. Sorry if I'm slow, but isn't that a chicken-and-egg problem? We're going to provide this as an add-on to our standard ISP resolver service. Most clients will pick up the addresses from DHCP/DHCPv6. Very few are configuring DNS resolvers manually, and those who do are using other providers. Like you :-) > For certificates with IPv4 address, we use ZeroSSL / GoGetSSL, both > are SubCA with Sectigo, which works fine. Thanks. That's interesting. I didn't know ZeroSSL offered this. And GoGetSSL has better docs than most. But we can't run a resolver service without IPv6 in 2022. Did you ever get any explanation of this restriction? Shouldn't be much harder/different to validate an IPv6 address if you can validate an IPv4 address. > For IPv6 address, we used Digicert but it's too expensive, so we give > up ☹ Hard to claim it's too expensive if no one else thinks it's worth offering a similar service... > Our DoT/DoH service is https://dns.sb/ Nice. Good to have more examples to look at. Bjørn
