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From: Olafur Gudmundsson <ogud@ogud.com>
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Subject: Re: default named.conf in bind ports and slaving from f-root
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Date: Mon, 17 Apr 2017 12:01:57 -0400
Cc: thomas@gibfest.dk
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Hi Thomas,=20

RFC7706  appendix B.1 is relevant here, =
https://tools.ietf.org/html/rfc7706#appendix-B.1
it strongly recommends relying on more than one provider just to avoid =
cases like this=20
Strongly recommend that you add the all the other root servers =
(including F) to your patch along with the ICANN servers as that will =
allow=20
Bind to try any available server for the zone transfer.=20

Olafur