Date: Thu, 02 Aug 2007 15:16:24 -0700 From: "Kevin Oberman" <oberman@es.net> To: freebsd-current@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG, dougb@FreeBSD.ORG Subject: Re: named.conf restored to hint zone for the root by default Message-ID: <20070802221624.DF46C45045@ptavv.es.net> In-Reply-To: Your message of "Thu, 02 Aug 2007 22:42:47 %2B0200." <200708022042.l72Kglpk047695@lurza.secnetix.de>
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--==_Exmh_1186092984_53454P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Date: Thu, 2 Aug 2007 22:42:47 +0200 (CEST) > From: Oliver Fromme <olli@lurza.secnetix.de> > Sender: owner-freebsd-stable@freebsd.org > > Hi, > > Just for the record, I like the current solution, i.e. > default being a "hint" zone, and slave zones being > commented out, ready to be used for those who know > what they're doing. > > However, I noticed that the "refresh" interval of the > root zone is 1800, i.e. it would be fetched every 30 > minutes, even though the zone seems to be updated at > most once per day. Therefore, wouldn't it make sense > to add the following option to the slave zones? > > min-refresh-time 86400; > Once again...refesh is not the time between zone transfers. It is the time between serial number checks on the root SOA. Only if the SOA differs is the zone transferred. The SOA queries to root (one per DNS server every half hour) is not an issue according to Paul Vixie. Also, the root zone is updated twice a day, every day (at least to the extent of a serial number bump) whether it is needed or not. Forcing the minimum refresh to once a day could delay the recognition of a new zone for up to a day and that is not a good thing. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1186092984_53454P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFGsle4kn3rs5h7N1ERApOXAKCiA9XdFJNop/7hNlehso5uiD0HDACfcVdc KQsOdUlwT3kDekOgFeeKuIc= =E6jm -----END PGP SIGNATURE----- --==_Exmh_1186092984_53454P--
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