3 ms·
It is likely that the CGNATs are slower when doing translation to IPv4 rather than just passing (with some filtering) IPv6. 10ms does seem like a lot though. M
by kevincox 5y ago
It is likely that the CGNATs are slower when doing translation to IPv4 rather than just passing (with some filtering) IPv6.
10ms does seem like a lot though. Maybe a remote lookup? Or something to do with prefering IPv6 with a small delay (happy eyeballs related?)
- Dagger2 5y agoThey're rounding the numbers, so presumably it could be anywhere from 5ms to 15ms. Some ISPs (I'm thinking of T-Mobile, but presumably they aren't the only one) centralize their CGNAT routers, whereas v6 traffic is handed off more locally since it doesn't need to be NATed. v4 traffic may need to travel further on those ISPs.