Improve DNS error reporting and update to current miekg/dns#2153

Merged

beorn7 merged 2 commits intorelease-1.2from beorn7/vendoring

Nov 3, 2016

+7,005-2,301

Commits on Nov 3, 2016

Update vendoring github.com/miekg/dns
beorn7
committed
Adjust dns.go to new miekg/dns package and improve error handling.
beorn7
committed