One of the two drafts I wanted to talk about at dnsop today for WG adoption was "Serving Stale Data to Improve DNS Resiliency": https://datatracker.ietf.org/doc/draft-tale-dnsop-serve-stale/
In short, this describes a method for increasing DNS resiliency by treating the inability to refresh data after TTL expiration as a soft error, eventually becoming a hard error if the authoritative server failures are not remedied. This basic algorithm has been in use at Akamai for six years now and helped us avoid numerous incidents. I'd implemented it in BIND and the patches were recently contributed to ISC. There are relevant patents in the area held by Google and Akamai/Xerocole. I'm still waiting for the official statement from Akamai lawyers about it, but given that we contributed to the code to ISC for release under the Mozilla Public License I don't expect any really issue here. Warren and I are hoping for WG adoption. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
