Strange issue in combination with qname-minimsation

[A. Schulze]

Am 08.08.2018 um 16:46 schrieb Marco Davids (SIDN) via Unbound-users:
> Hi,
> 
> Here is my situation:
> 
> Unbound: 1.7.1

1.7.3 here ...

> qname: euc-word-edit.officeapps.live.com
> Listening on IPv4 + IPv6
> 
> Steps:
> 
> - Reload Unbound
# killall unbound
(unbound is restarted by the supervisor...)

> - Query for $qname on the IPv4 address (good reply)
$ time dig @127.0.0.1 euc-word-edit.officeapps.live.com. +short
euc-word-edit-afd.officeapplf.live.com.akadns.net.
euc-word-edit.officeapplf.live.com.akadns.net.b-0016.b-msedge.net.
b-0016.b-msedge.net.
13.107.6.171

real    0m1,247s
user    0m0,004s
sys     0m0,008s

> - Queray again for $qname on the IPv6 address (servfail)
~$ time dig @::1 euc-word-edit.officeapps.live.com. +short
euc-word-edit-afd.officeapplf.live.com.akadns.net.
euc-word-edit.officeapplf.live.com.akadns.net.b-0016.b-msedge.net.
b-0016.b-msedge.net.
13.107.6.171

real    0m0,013s
user    0m0,008s
sys     0m0,004s

> 
> If I disable qname-minimisation it works, there are no servfails.
> 
> It doesn't matter if I start with the IPv4 address of the IPv6 address, but once it has succesfully resolved over the one, it won't resolver over the other.
> 
> Can you reproduce?
no