12-23-2010
The usual thing is a ping, not too often, of a host out there but nearby, like the ISP DNS or MAIL server. If you cannot ping their dns server, your connection is not very useful. In fact, nslookup test-addr dns-server-ip could do the same thing! Stick it in the cron. This does not complicate anything else, and does not stop checking for any reason.
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