Santiago Castillo Oli wrote: > After boot, the aliased interfaces are up sometimes, but sometimes not. > > This is the content of /etc/network/interfaces: You don't have a gateway at all? None? Since I don't believe it I am going to ignore that suggest having one. But of course if you really are on an isolated lan segment then you really won't have a gateway. Do you *really* need to set the mtu to the default 1500? Unless you need to change it I recommend not adding that setting. You are using a style of configuration that I believe to have been deprecated. In the old days you would use ifconfig to create eth1:1 but these days that is deprecated. Now you assign a label eth1:1 to an existing interface. Instead of your previous I recommend using the up and down commands to add alias labels to your device when the device comes up and to remove them when the device goes down. Review this following config file modification of your file and then give this style a try and I think it will work much better for you. Note that /26 is the same as /255.255.255.192 but more compact. And /29 is the same as /255.255.255.248 and so forth. Bob auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet static address 192.168.1.100 netmask 255.255.255.0 gateway 192.168.1.1 # Computer room network auto eth1 iface eth1 inet static address 192.168.33.62 netmask 255.255.255.192 # WiFi Network up ip addr add 192.168.33.126/26 dev eth1 label eth1:1 down ip addr del 192.168.33.126/26 dev eth1 label eth1:1 # Printers Network up ip addr add 192.168.33.246/29 dev eth1 label eth1:2 down ip addr add 192.168.33.246/29 dev eth1 label eth1:2 # Application server Network up ip addr add 192.168.33.254/29 dev eth1 label eth1:3 down ip addr add 192.168.33.254/29 dev eth1 label eth1:3 # DSL-Internet access auto dsl-provider iface dsl-provider inet ppp pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf provider dsl-provider
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