Alissa Cooper has entered the following ballot position for
draft-ietf-dnsop-cookies-09: Yes

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COMMENT:
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(1)
"To avoid
   rollover synchronization and predictability, it is RECOMMENDED that
   pseudorandom jitter in the range of plus zero to minus at least 40%
   be applied to the time until a scheduled rollover of a DNS cookie
   secret."

Why is it recommended to only vary the interval in only the shorter
direction (I'm assuming that is what is meant by "plus zero")? Then the
interval will only ever get shorter, it seems.

(2)
It seems like there should be a recommendation about when to delete an
old client cookie (e.g., after receiving a response to an outstanding
request, or after some period of time with no response).


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