>Couldn't we write netbsd-proto.mc as:
>	include(`netbsd-proto-IPv4only.mc')
>	DAEMON_OPTIONS(`Family=inet, address=0.0.0.0, Name=MTA')dnl
>	DAEMON_OPTIONS(`Family=inet6, address=::, Name=MTA6')dnl
>That way whatever things we add to the v4 config file will get added to
>the other one automatically, reducing redundancy.

	I agree, if it works it should be fine.
	or, maybe we should make netbsd-proto-common.mc, and include it
	from IPv4/v6 config and IPv4-only config.  at this moment IPv4-only
	config is happened to be same as "common" config.

itojun