RFC2182 at least 3, recommends 5 - 7 Thank You,
Jacob D. Evans [ http://twitter.jacobdevans.com/ ] [ http://facebook.jacobdevans.com/ ] [ http://www.jacobdevans.com/ ] [ http://linkedin.jacobdevans.com/ ] [ mailto:sig-cont...@jacobdevans.com ] [ http://serverfault.com/users/200560/jacob-evans ] [ https://github.com/jakedevans ] [ https://keybase.io/jacobdevans ] ----- Original Message ----- From: "Niall O'Reilly" <niall.orei...@ucd.ie> To: "bind-users" <bind-users@lists.isc.org> Sent: Friday, July 14, 2017 2:40:49 PM Subject: Re: delegation NS records On 14 Jul 2017, at 14:07, b...@zq3q.org wrote: > only a single **delegation** NS record > needed Actually, there should be two or more, and their IP addresses should belong to different networks. RFC1034, section 4.1: A given zone will be available from several name servers to insure its availability in spite of host or communication link failure. By administrative fiat, we require every zone to be available on at least two servers, and many zones have more redundancy than that. /Niall _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
