On Sep 10, 2013, at 8:17 PM, David Morris <dwm(_at_)xpasc(_dot_)com> wrote:
On Wed, 11 Sep 2013, Brian E Carpenter wrote:
On 11/09/2013 09:59, Olafur Gudmundsson wrote:
...
My colleagues and I worked on OpenWrt routers to get Unbound to work there,
what you need to do is to start DNS up in non-validating mode
wait for NTP to fix time, then check if the link allows DNSSEC answers
through, at which point you can enable DNSSEC validation.
Hopefully you also flush the DNS cache as soon as NTP runs. Even so,
paranoia suggests that a dodgy IP address might still be cached in
some app.
I think you can avoid that issue by having the device not pass traffic
until the DNSSEC validation is enabled. Only the device needs the special
permissive handling for this to work.
You mean only allow NTP and DNS traffic in the beginning, until checks are
done?
In many cases we can get a reasonable time by writing the current time to a
NVRAM variable every 6 hours or so, but that
only helps for reboot.
Olafur