Evan, > On Jul 24, 2023, at 10:34 AM, Evan Hunt <e...@isc.org> wrote: > > The original text says a series of seven resolution failures would increase > the duration before a retry to five minutes: 5 seconds to 10 to 20 to 40 to > 80 to 160 to 300. Lowering the starting value to one second means it would > take nine failures to reach 300. >
It was not our intention that “2” would be the only possible exponent in the backoff algorithm. Would this slightly revised text be more agreeable? Resolvers SHOULD employ an exponential or linear backoff algorithm to increase the amount of time for subsequent resolution failures. For example, the initial time for negatively caching a resolution failure is set to 5 seconds. The time is increased after each retry that results in another resolution failure. Consistent with [RFC2308], resolution failures MUST NOT be cached for longer than 5 minutes. DW _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
