Hmmmm :| really weird...
Care to try something?
su -c "echo nameserver 18.104.22.168 > /etc/resolv.conf"
followed by root password and try accessing my site then. If You won't be able - just reboot and the changes will go away as /etc/resolv.conf is being overwritten during each reboot. If You don't want to reboot then just run:
su -c "service network restart"
followed by root's password of course this will overwrite it as well.