Bug 1257298

Summary:	dns=dnsmasq proxy momentarily fails to resolve hostnames that are resolved upstream
Product:	[Fedora] Fedora	Reporter:	Dimitris <dimitris.on.linux>
Component:	NetworkManager	Assignee:	Lubomir Rintel <lkundrak>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	22	CC:	dcbw, lkundrak, psimerda
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-07-19 17:40:23 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Dimitris 2015-08-26 17:37:51 UTC

Description of problem:

Several times a day I notice that names which are resolved upstream are, for short periods (seconds) not resolved by the dnsmasq proxy.  This is a regression from F21.

Version-Release number of selected component (if applicable):

1:1.0.6-0.2.20150813git7e2caa2.fc22

How reproducible:

Transient

Steps to Reproduce:
1. dig github.com
2. Occasionally get no addresses from 127.0.0.1
3. but while this is happening, dig @192.168.1.1 github.com resolves.  That's the name server in //var/run/NetworkManager/dnsmasq.conf

Actual results:

github.com does not resolve - only on dnsmasq proxy

Expected results:

github.com should resolve on the proxy if it resolves upstream.

Additional info:

Comment 1 Dimitris 2015-09-14 17:36:25 UTC

Caught this example today:

[d@gaspode ~]$ dig github.com

; <<>> DiG 9.10.2-P4-RedHat-9.10.2-5.P4.fc22 <<>> github.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 56285
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; MBZ: 7ffc , udp: 4096
;; QUESTION SECTION:
;github.com.			IN	A

;; Query time: 6 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Sep 14 10:35:09 PDT 2015
;; MSG SIZE  rcvd: 39

[d@gaspode ~]$ dig github.com

; <<>> DiG 9.10.2-P4-RedHat-9.10.2-5.P4.fc22 <<>> github.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61609
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;github.com.			IN	A

;; ANSWER SECTION:
github.com.		11	IN	A	192.30.252.129

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Sep 14 10:35:12 PDT 2015
;; MSG SIZE  rcvd: 44

Comment 2 Fedora End Of Life 2016-07-19 17:40:23 UTC

Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.