>With a stock Netbsd kernel, is it possible to have the machine
>answer for multiple IP addresses on a single interface?
>
>If yes, then what would the proper way of setting this up be
>and how could a server running on the machine know which IP was 
>being asked for?

See the ifconfig(8) section discussing the alias argument, i.e.:

    ifconfig ln0 alias 1.2.3.4

- Marc
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