* Add document on "Understanding DNS"
This is a follow-on to the recent docs "Understanding traffic routing"
and "Understanding TLS" where I attempt to give in depth explainations
of some of the implementation details of some commonly misunderstood
parts of Istio.
In particular, this aims to clear up how app DNS, DNS proxying, and
Envoy DNS resolution interact.
* Apply suggestions from code review
Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>
* Add non-success info
* Update content/en/docs/ops/configuration/traffic-management/dns/index.md
Co-authored-by: Frank Budinsky <frankb@ca.ibm.com>
* tie in dns proxy
* Apply suggestions from code review
Co-authored-by: Frank Budinsky <frankb@ca.ibm.com>
Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>
Co-authored-by: Frank Budinsky <frankb@ca.ibm.com>