Quote:
Originally Posted by j-a
... the dropouts are caused by the ARP/DNS services stopping for a few minutes (typically 3 or 4 mins) then recovering. If I were to reboot the cable modem during this time the ARP/DNS comes back instantly. ...
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I wonder whether the 3-4 minute delay is actually created by your router as it times-out on WAN1 and tries not to use it again for this period.
Still, that's useful information that you've provided.
I've the feeling that this problem is something to do with datagrams rather than the DNS service itself. This is because I've seen the same issues no matter if I use OpenDNS or VM's own servers.
The problem did seem to be worse after 5pm when all the kids got home from school. However, it is eased if I used the proxy server at renf-cache-9.server.ntli.net.
Some people see it quite consistently whilst others do not. I only noticed it seriously after I upgraded my computer. I never seem to have any problems with Mrs A's machine which is much slower but uses the same connection.
I'm wondering if somehow this is something to do with the timing between packets. Perhaps my machine can now send out back-to-back DNS datagrams and some later ones are getting lost.