Iptables and vlan interfaces

[sebastian.ionita at focomunicatii.ro]

Why doesn't iptables works with vlans interfaces? 

iptables -t mangle -A FORWARD -i eth0 -o eth1.11 -j MARK --set-mark 4
Gives me the error:
host/network eth1.11 not found. 

I'm running kernel version 2.4.27. with iptables 1.2.9 

The eth1.11 exists works perfectly. 

Seby,