208209 - DNS: doesn't refresh ip address of url

Status: VERIFIED DUPLICATE of bug 168566

(Core :: Networking: Cache, defect)

Description

[Jerry Weida]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030529
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030529

If you visit a website, then the IP address changes for whatever reason, but you
do not restart the browser, the browser never checks for an IP address again. 
it just assumes that the known ip was correct, even after the record expires in
your dns cache.

Reproducible: Always

Steps to Reproduce:
1. alter hosts file for a website e.g. 127.0.0.1 www.example.com
2. browse to this address (make sure web server is running to respond)
3. alter the hosts file back to original and flush dns settings
4. try to browse to the real site now without restarting browser

Actual Results:  
The browser tries to connect to the local host again, but fails because I have
shutdown the web server.  It never refreshes the ip address even after flushing
my dns cache

Expected Results:  
Mozilla should have done a dns lookup again, especially if the address is not in
the dns cache.

Comment 1

[Robert Sander]

Hi!

his also happens on Linux:

Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.4) Gecko/20030714 Debian/1.4-2

Comment 2

[Fredrik Henrysson]

I think this is a duplicate. 
And the candidates are:
http://bugzilla.mozilla.org/show_bug.cgi?id=168566
http://bugzilla.mozilla.org/show_bug.cgi?id=162871
http://bugzilla.mozilla.org/show_bug.cgi?id=151929

Comment 3

[Jerry Weida]

This is indeed a duplicate for
Bug ID 168566
Bug ID 162871
Bug ID 151929

*** This bug has been marked as a duplicate of 168566 ***

Comment 4

[benc]

V dupe. Bug 1627871 is the best match, but that is close enough.