>>In the netstat outpur below, the Ibytes and Obytes for both address
>>families are the same. Is this a bug, something not yet implemented
>>or do I miss some option in my kernel to get it to discriminate
>>between address families?
>	I believe there's no code for per-AF, per-IF stats.  Ibytes and Obytes
>	are purely per-if stats (not per-AF).

	I was wrong.  NetBSD has struct ifaddr_data (sys/net/if.h) which does
	per-ifaddr stats.  I'll be adding some support for this.

itojun