UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Example URL:

Steps to reproduce the problem:
1. load a host with good A record and SERVFAIL for AAAA

What is the expected behavior?
Fall back to IPv4

What went wrong?
Chromium throws DNS error (misconfiguration)

Did this work before? N/A 

Chrome version: 55.0.2883.87  Channel: n/a
OS Version: Ubuntu 16.10
Flash Version: Shockwave Flash 24.0 r0

Chrome fails to load page when with the following DNS response

>dig fidelityrewards.com

; <<>> DiG 9.10.3-P4-Ubuntu <<>> fidelityrewards.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24917
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 3, ADDITIONAL: 4

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

;; ANSWER SECTION:
fidelityrewards.com.	1800	IN	A	170.135.79.254
fidelityrewards.com.	1800	IN	A	170.135.223.254
fidelityrewards.com.	1800	IN	A	170.135.184.254

;; AUTHORITY SECTION:
fidelityrewards.com.	172741	IN	NS	ns1.usbank.com.
fidelityrewards.com.	172741	IN	NS	ns2.usbank.com.
fidelityrewards.com.	172741	IN	NS	ns3.usbank.com.

;; ADDITIONAL SECTION:
ns1.usbank.com.		172741	IN	A	170.135.112.25
ns2.usbank.com.		172741	IN	A	170.135.176.55
ns3.usbank.com.		172741	IN	A	170.135.240.25

>dig login.fidelityrewards.com aaaa

; <<>> DiG 9.10.3-P4-Ubuntu <<>> login.fidelityrewards.com aaaa
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 46662
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;login.fidelityrewards.com.	IN	AAAA