bind vs glue records (fwd)

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

BTW, the reason I referred to glue records is because of warnings from:
http://mxtoolbox.com/SuperTool.aspx?action=dns%3astatic.acer.com&run=toolpage

---------- Forwarded message ----------
Date: Thu, 24 Mar 2016 16:41:58 +0000 (GMT)
From: Stephen Borrill <netbsd%precedence.co.uk@localhost>
To: tech-net%netbsd.org@localhost
Subject: bind vs glue records

With netbsd-7, BIND 9.10.2-P4 and using root.cache with no forwarders, I'm 
seeing problems with a few sites that have suspect glue records. I cannot 
recreate the problem with netbsd-5 and its in-base BIND. Upstream recursive 
servers such as Google don't have problems and so NetBSD is getting the blame 
from end-users.

Example domains are:
static.acer.com
bmb.secure.barclays.com
download.adobe.com

# host static.acer.com 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases:

Host static.acer.com not found: 3(NXDOMAIN)
# host static.acer.com 8.8.8.8
Using domain server:
Name: 8.8.8.8
Address: 8.8.8.8#53
Aliases:

static.acer.com is an alias for static-akamai.gtm.acer.com.
static-akamai.gtm.acer.com is an alias for wac.15D43.taucdn.net.
wac.15D43.taucdn.net is an alias for gp1.wac.v2cdn.net.
gp1.wac.v2cdn.net has address 93.184.220.20

On netbsd-7:
# /etc/rc.d/named restart
Stopping named.
Waiting for PIDS: 29737.
Starting named.
# dig static.acer.com

; <<>> DiG 9.10.2-P4 <<>> static.acer.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31266
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;static.acer.com.               IN      A

;; ANSWER SECTION:
static.acer.com.        86400   IN      CNAME static-akamai.gtm.acer.com.

;; AUTHORITY SECTION:
gtm.acer.com.           60      IN      SOA     gtm1.acer.com. 
hostmaster.gtm1.acer.com. 686 10800 3600 604800 60

;; Query time: 1263 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Mar 24 16:39:50 GMT 2016
;; MSG SIZE  rcvd: 128


On netbsd-5:
# /etc/rc.d/named restart
Stopping named.
Waiting for PIDS: 87.
Starting named.
# dig static.acer.com

; <<>> DiG 9.5.2-P2 <<>> static.acer.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20858
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;static.acer.com.               IN      A

;; ANSWER SECTION:
static.acer.com.        86400   IN      CNAME static-akamai.gtm.acer.com.
static-akamai.gtm.acer.com. 30  IN      CNAME   wac.15D43.taucdn.net.
wac.15D43.taucdn.net.   3600    IN      CNAME   gp1.wac.v2cdn.net.
gp1.wac.v2cdn.net.      3600    IN      A       93.184.220.20

;; AUTHORITY SECTION:
v2cdn.net.              172800  IN      NS      ns1.v2cdn.net.
v2cdn.net.              172800  IN      NS      ns2.v2cdn.net.

;; Query time: 623 msec
;; SERVER: 192.168.1.254#53(192.168.1.254)
;; WHEN: Thu Mar 24 16:40:50 2016
;; MSG SIZE  rcvd: 179


--
Stephen