Yup. And Google folks accounted for the world pinging them all day long.
I wouldn't call using DNS resolvers as best "am I connected to internet over this interface" tool though. A day, year or 5 years from now the same team may decide to drop/filter and then thousands of hardcoded "handmade automation solutions" will break. And I believe that's closer to what Masataka was trying to convey. — Łukasz Bromirski > On 9 Feb 2022, at 14:23, Mark Tinka <mark@tinka.africa> wrote: > >> On 2/9/22 15:00, Masataka Ohta wrote: >> >> >> Wrong. It is not bad, at least not so bad, pinging properly >> anycast DNS servers. >> >> The point of anycast is resistance to DDoS. >> >> But, relying on hard coded 8.8.8.8 is not a good idea because >> DNS service of the address may be terminated. >> >> Instead, properly anycast root name servers are authoritative >> resources provided for public DNS queries which can be used for >> pinging, though pinging so with ICMP should be less painful >> for the servers. > > That's like saying you won't have an egg for dinner because it's typically > had for breakfast. > > Users don't care what infrastructure has been designated for. If they can > find another use for it other than designed, which serves their interests, > they will use it. > > We need to allow, and account, for that. > > Mark.
