Can bind be configured to not drop RR's from the cache when the upstream DNS server is unresponsive

[Darcy Kevin (FCA)]

Would they be receptive to letting you slave the zone? At least then you’d have the whole EXPIRE time before the names stopped resolving.

If they’re concerned about security, then the transfers could be locked down by source IP address, or, if their software supports it, TSIG key.

One of the downsides of slaving, of course, is that changes might take a while to replicate, unless NOTIFY is set up.

                                                                                                                                                - Kevin

[FCA_Pantone_email]
----------------------------------------------------------------------
Kevin Darcy
NAFTA Information Security Projects

FCA US LLC
1075 W Entrance Dr,
Auburn Hills, MI 48326
USA

Telephone: +1 (248) 838-6601
Mobile: +1 (810) 397-0103
Email: kevin.darcy at fcagroup.com

From: bind-users-bounces at lists.isc.org [mailto:bind-users-bounces at lists.isc.org] On Behalf Of Ron
Sent: Friday, March 18, 2016 4:46 AM
To: G.W. Haywood
Cc: bind-users at lists.isc.org
Subject: Re: Can bind be configured to not drop RR's from the cache when the upstream DNS server is unresponsive



On Fri, Mar 18, 2016 at 12:12 AM, G.W. Haywood <bind at jubileegroup.co.uk<mailto:bind at jubileegroup.co.uk>> wrote:
Hi there,

On Thu, 17 Mar 2016, Ron wrote:
... in this case it's a supplier who is unable to keeps his DNS servers
working, and we just want to keep the connectivity.

I'd just put something in /etc/hosts and send myself an email every
month or so to remind me I'd done that.


This is what we're currently using, but it has the downside of not picking up ip address changes.

Ron



--

73,
Ged.



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