3 ms·
AAAA record takes 4x as long because v6 addresses are 4x size of v4 addresses.
by anticensor 7y ago
AAAA record takes 4x as long because v6 addresses are 4x size of v4 addresses.
- Dagger2 7y agoI kinda wondered if that was the thought process, but the extra length of the v6 address only adds 12 bytes to the DNS packet. There's still a bunch of other stuff in the packet; dig says the size for my test query goes from 361 bytes to 373 bytes, which is only a 3.3% increase. Even at a rather slow 1 Mbit/s that would only add 100µs to transmit a packet that takes in total ~3ms to transmit. And that 3ms is likely smaller than the latency in the lookup, which is generally going to be the dominating factor.