The save function does not work in the ipvsadm init script. While the function is present, the line that allows the save() function to be used as a command-line option is not present. To get it to work, the following line should be added to /etc/init.d/ipvsadmin: opts="{$opts} save"
hope you don't mind, I'm adding a note to remind me to bump ipvsadm to this bug
fixed in cvs