I’ve built the tun/tap driver for Mac OS X for Tiger on Intel processors. You can download tuntap_tiger-intel-20060604.tar.gz and the diffs I used to get it to compile and build the packages… Simply untar the package and double click the tuntap_install.mpkg file to install. I’ve not actually tested this yet beyond performing an install and ensuring that the kexts loaded – I will be doing so as so