Multiple IP addresses with different mask on 1 interface

[Pavel Ivanchev]

Hi there!
Is it possible to assign many IP addresses (aliases) on one interface
but each ip address to be in different class and netmask?
For example:
dc0: 192.168.168.1 netmask 255.255.255.0
alias 10.1.0.1 netmask 255.255.0.0