itojun@iijlab.net wrote:

> 
> >> Can someone tell me why this command:
> >>    gifconfig gif0 inet 198.145.117.53 206.123.31.102
> >> produces this output:
> >>    gifconfig: ioctl (SIOCSIFPHYADDR): no such interface
> >> when I try to hook up to the 6bone?  netstat -i produces the following
> >> lines (among others) so I think the interface really exists.
> >Do you have an ethernet NIC on that machine?
> >With no MAC address, I could not use gif tunnel device.
> >As my last try was about 2 months ago, the situation may have been
> >changed. But I got the same error, IIRC.
> 
> 	If you are using recent sys/netinet6/in6_ifattach.c, you should have
> 	no problem with that.  When no MAC address is available in the system
> 	the kernel will generate IPv6 interface identifier from
> 		MD5(hostname)
> 	as a last resort.  you will get kernel printf() like this when you do
> 	gifconfig (visible via dmesg):

I hope I'm not speaking out of turn, but I think Jon would have been
using a pc532 which _definitely_ doesn't have any sort of on-board
ethernet capability.  There is a SCSI-ethernet bridge available, but
last I spoke with Jon he was using PPP.

Sounds like the real question is "how recent is recent?" for
in6_ifattach.c...

Simon.