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too small TTLs !

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Francis Dupont Francis.Dupont at inria.fr
Sun Feb 28 23:22:27 CET 1993

 In France we have a lot of problems with the name service of some Japanese
sites: the distance between us and them is a little bit more than 30 hops
then with a too small UDP default time to live the packets are dropped
in transit with a TIME_EXCEEDED error...
 A recommendation should be produce about this in the IETF DNS group.
I propose to recommend that "on name servers default TTLs must be
set to a value greater or equal to 60" immediatly in RIPE.

Regards

Francis.Dupont at inria.fr

PS: for network operators: you should note the DNS packets in transit with TTL
less than 20 and signal them to senders. This can be spread to other services.

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