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Setting default DNS
I meant to post about this last night but forgot because I was obsessing over DVI problems.
Having fixed my wifi login problems, the iBook was still having trouble communicating with my network and the internet simultaneously; it seemed that I could only get on line if I logged into the router and forced a reset.
The fix I eventually came up with was something that Be had previously told me to do with the other computers (which don't use wifi and aren't going to be used elsewhere); set the default DNS to Be's address, with the backup set as Google's server, 8.8.8.8
That worked perfectly, and I've tested that it will still work if I'm not logged in via Be, using the WiFi from the flat below (with permission), but now I'm wondering what happens if e.g. I'm not at home and Google's server goes down. It previously seemed to be OK without a default DNS server set; am I right to assume that in the absence of both it will find another by itself?
Having fixed my wifi login problems, the iBook was still having trouble communicating with my network and the internet simultaneously; it seemed that I could only get on line if I logged into the router and forced a reset.
The fix I eventually came up with was something that Be had previously told me to do with the other computers (which don't use wifi and aren't going to be used elsewhere); set the default DNS to Be's address, with the backup set as Google's server, 8.8.8.8
That worked perfectly, and I've tested that it will still work if I'm not logged in via Be, using the WiFi from the flat below (with permission), but now I'm wondering what happens if e.g. I'm not at home and Google's server goes down. It previously seemed to be OK without a default DNS server set; am I right to assume that in the absence of both it will find another by itself?
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Which doesn't matter much, because it's exceedingly unlikely that Google's server will ever become unreachable. I'm currently working for the people running the Swedish top-level domain, and I've seen how they run their public-facing DNS servers. It seems unlikely that Google won't use the same basic techniques (anycast IP addresses and redundant load-balanced clusters, basically), since the cost will be pocket change for someone like them. Which boils down to that if you can't reach them, you almost certainly can't reach anything else either.
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