tun interfaces and aliases

E posibil oare la o interfatza tun (adika un tunnel pppoe) de atribuit mai multe IP adrese ?am incercat asha:ifconfig tun0 alias inet ip.adress.to.add netmask 255.255.255.255dar spune ka :#ifconfig tun0 alias 217.26.165.211 netmask 255.255.255.255ifconfig: ioctl (SIOCAIFADDR): Destination address requiredwtf :/?