On 7 Mar 2010, at 09:13, Sam Moffatt wrote:

> Network itself is fine, everything still works with network

DNS is used to initially resolve a text name (e.g. www.skype.com to 
78.141.177.7). Once you've got that resolution, then all networking operations 
just use the numeric IP address; so existing resolved connections will continue 
to work. Even if you disconnect and then reconnect, the result of the lookup 
will still be in the local cache on the system, so it will probably be able to 
reconnect.

Since DNS is often a blocker, that's why I raise it as a potential issue. It 
may be that no DNS lookups work from your laptop once it's connected. You can 
verify this by opening a Terminal (presumably, outside of the network first!) 
and then once connected executing a lookup for a domain you haven't looked up 
before (say, www.foo.com) by doing 'host www.foo.com'. This should come back 
with a numeric result; if it doesn't, or takes time, then your DNS is suspect. 
Note that using a browser to do this test is invalid, since the browser may be 
connected to a proxy and not do any local lookups.

Alex

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