On Fri, Nov 19, 2021 at 6:48 PM Daniel Kahn Gillmor <[email protected]> wrote: ...
> To avoid incurring additional minor timeouts for such a recursive > resolver, the pool operator should either: > Nit: These should not be timeouts. The non-participating backends are expected to return TCP RST or ICMP Destination Unreachable (Port Unreachable), leading to immediate fallback after 1 RTT. Maybe the draft needs some guidance to that effect. A timeout is still possible if the network is misbehaving (e.g. ICMP blackhole), but it shouldn't happen otherwise.
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