1167698 - Annoying DNS issues after being logged into VPN for a while

Status: RESOLVED FIXED

(Infrastructure & Operations :: Infrastructure: OpenVPN, task)

Description

[Selena Deckelmann :selenamarie :selena]

Sorry for the vagueness of this report.

What I find is that after some time passes, my DNS stops working for *certain* mozilla.org hosts, but continues to work for non mozilla.org hosts. 

For example, bugzilla.mozilla.org in particular is a problem. If I disconnect and reconnect the VPN, that seems to repair the issue for a period of time.

Comment 1

[Dan Parsons [:lerxst]]

Hi Selena! I feel like I might have seen this problem before with regards to certain Linux distributions... unfortunately I don't think it was ever resolved, but I'm happy to try again. Which dist / version are you on, and when DNS fails, have you tried sending queries directly to one of our main DNS servers? Next time you see this happen, try: host hostname.that.fails.to.resolve 10.22.75.40 and show me the output.

Comment 2

[Selena Deckelmann :selenamarie :selena]

dist: Ubuntu 13.10
uname -a: Linux taiping 3.13.0-52-generic #86-Ubuntu SMP Mon May 4 04:32:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Happened just now!

selena@taiping:~/repos/firefox-development/mozilla-central 13:18 ♥: host bugzilla.mozilla.org 10.22.75.40
;; connection timed out; no servers could be reached
selena@taiping:~/repos/firefox-development/mozilla-central 13:18 

Comment 3

[Selena Deckelmann :selenamarie :selena]

dist: Ubuntu 13.10
uname -a: Linux taiping 3.13.0-52-generic #86-Ubuntu SMP Mon May 4 04:32:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Happened just now!

selena@taiping:~/repos/firefox-development/mozilla-central 13:18 ♥: host bugzilla.mozilla.org 10.22.75.40
;; connection timed out; no servers could be reached
selena@taiping:~/repos/firefox-development/mozilla-central 13:18 

Comment 4

[Selena Deckelmann :selenamarie :selena]

LOL  Bugzilla doesn't like the unicode in my prompt ;)

https://selena.pastebin.mozilla.org/8834479

Comment 5

[Selena Deckelmann :selenamarie :selena]

Here's my config:

[connection]
id=mozilla vpn
uuid=ff1a0eb6-823e-4b0d-ba69-233734bf16b9
type=vpn
permissions=user:selena:;
timestamp=1427131450

[vpn]
service-type=org.freedesktop.NetworkManager.openvpn
ta-dir=1
connection-type=password-tls
password-flags=1
remote=openvpn.scl3.mozilla.com
cipher=AES-256-CBC
comp-lzo=yes
cert-pass-flags=0
username=[e-mail]
cert=/home/selena/Downloads/ovpn/cert.crt
ca=/home/selena/Downloads/ovpn/ca.crt
key=/home/selena/Downloads/ovpn/key.key
ta=/home/selena/Downloads/ovpn/ta.key

[ipv6]
method=auto

[ipv4]
method=auto
never-default=true

Planning to add "reneg-sec=0" in there and see if that fixes anything!

Comment 6

[Justin Dow [:jabba]]

Selena, how are things going on this bug? Are you still experiencing issues?

Comment 7

[Brian Hourigan [:digi]]

Old bug, no update, I'm going to assume we're good here.