/etc/resolv.conf links to /tmp/resolv.conf
/tmp/resolv.conf links to /tmp/resolv.conf.auto by default (which is where the ISPs nameserver is in)
When dnsmasq starts, it replaces /tmp/resolv.conf with a file pointing to 127.0.0.1
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6043 3c298f89-4303-0410-b956-a3cf2f4a3e73