User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; ja-JP; rv:1.0.1) Gecko/20020823 Netscape/7.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; ja-JP; rv:1.0.1) Gecko/20020823 Netscape/7.0 I frequently move my notebook between work and home. My mail server is located at home and is visible on that network as a 192.168.1.x address. From work, the same mail server is visible as a global IP address. When moving between networks, each network provides its own DNS server when the notbook registers via DHCP. The problem is that when I start mozilla at home and get mail. It will lookup the host mail.mydomain.com and connects fine. If I then suspend my machine, take it to work, and attempt to get mail, I will get a host not found error. It appears that Mozilla is caching the IP address of the mail host as 192.168.1.x rather than looking it up again. If I wait for a while or restart mozilla, then things will work fine... Until I take the machine home. Then I have the same problem in reverse. One option would be to make the cache timeouts include the time that the machine was suspended. It is always suspended for at least an hour in these cases. But a better solution may be to have the cache get flushed if the machines IP address changes or if the cached IP address can not be located. Thanks in advance. Reproducible: Always Steps to Reproduce: 1. see details. 2. 3.
I think it would be best to mark this a DUPLICATE of Bug 162871, as the issue is essentially the same and the fix probably would be also. There are known issues and several open bugs (151683, 86942) that the DNS service does not cope well with switching networks/going online/offline. This bug ought also be assigned to Browser/Networking as it has implications beyond just MailNews and that component is the more-general.
Same trouble on FreeBSD 4.7-Stable ( CVS update 26 october) and Mozilla until 1.2a (not yet tested on 1.2b). If Mozilla is running and I change the DNS server, there is no DNS resolution. Changing the DNS servers occurs with VPNs too... If I kill Mozilla and relauch it it is OK but it is not really the right way. My version: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.1) Gecko/20021019 port mozilla-1.1_2,1
They should be flushed every minute. Even when there's no error RESOLVING a domain, it could still be wrong, as with xchat.org on my ISP. I have to start using another browser until mozilla finds it practical to delete the DNS cache.
I was debating whether to add a comment to this bug or open a new one, since this seems to be related to a *change* in the IMAP server's IP address, whereas I can see the same behavior even when the server resolves to the same IP address. Hey, even when I'm on the same subnet. Steps to reproduce: 1. Open Mozilla while on IP address A- connect to IMAP, everything works fine 2. Disconnect from IP address A 3. Connect to IP address B (verified both from the same and different subnets) 4. the server is at the same IP address 5. Mail hangs until restarted (needs kill -9) or reconnected to the original IP address Note: reproduces in both directions
*** This bug has been marked as a duplicate of 162871 ***
Status: UNCONFIRMED → RESOLVED
Closed: 16 years ago
Resolution: --- → DUPLICATE
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