4 ms·
(Drawing from 1-semester CCNA course in uni) Since DNS operates over UDP, isn't the amount of data that can be safely transferred effectively bottlenecked by th
by drones 3y ago
(Drawing from 1-semester CCNA course in uni) Since DNS operates over UDP, isn't the amount of data that can be safely transferred effectively bottlenecked by the smallest page size between the routers that reach your device? DNS is served in one chunk, right?
- baby_souffle 3y agoDNS can switch to tcp for this reason
- lowpro 3y agoUsually if a response is greater than 512 bytes the DNS server will renegotiate on TCP 53. Note some DNS servers might not do this, but every normal implementation does that I’m aware of.
- piperswe 3y agoHistorically musl libc didn't support TCP DNS, but even musl supports it now [1] [1]: https://www.theregister.com/2023/05/16/alpine_linux_318/ https://www.theregister.com/2023/05/16/alpine_linux_318/