First, we need install vlan package to get available the 8021q kernel module:
host01# apt-cache show vlan host01# apt-get install vlan host01# echo 8021q >> /etc/modules host01# modprobe 8021q
Finally, we can edit your network configuration as following:
host01# cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug eth0 iface eth0 inet dhcp auto eth0.206 iface eth0.206 inet static address 10.6.60.165 netmask 255.255.255.0
503: Service Unavailable 