1324879 - Firefox can't open page after VPN reconnect

Status: RESOLVED DUPLICATE of bug 1321841

(Core :: Networking, defect)

Description

[Laurens Vets]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20161129173726

Steps to reproduce:

When my corporate VPN client reconnects, Firefox can't open any pages.


Actual results:

Page not found when trying to refresh a page or opening a new tab.


Expected results:

Firefox should notice this and work.

Comment 1

[Laurens Vets]

Some additional information:

Environment:
- Firefox 50.0.2
- Using a proxy ("Use system proxy settings")
- Using Cisco AnyConnect VPN 3.1.14018

When the VPN disconnects and reconnects, Firefox is not able to show any pages. I usually do the following to fix it:
1. Options->Advanced->Network Settings->Select "No proxy"->Press "OK"
2. Select "Use system proxy settings" again
3. Firefox works again...

The behaviour is similar to https://bugzilla.mozilla.org/show_bug.cgi?id=1245210

Comment 2

[Michal Novotny [:michal]]

Does switching to work offline and back fix the issue too?

Could you please provide logs of both cases? I.e. one log containing VPN reconnect only followed by one failed page load, second log containing VPN reconnect + resetting proxy settings followed by one successful page load?

See https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging
use MOZ_LOG=timestamp,rotate:200,nsHttp:5,nsSocketTransport:5,nsStreamPump:5,nsHostResolver:5,proxy:5

Comment 3

[Dragana Damjanovic [:dragana]]

This is dup of 1321841.

I will take a look at logs from other bug in coming days.