IFT_L2VLAN and IPv6 link-local addresses

[John Baldwin]

On Monday, December 20, 2010 1:10:57 am John Hay wrote:
> Hi,
> 
> I see that on FreeBSD-8 if you use IPv6 inside vlans, the local part of
> the address (bottom 64 bits) is based on the MAC address of the first
> ethernet interface on the system. It was not like this in my old -7,
> machine, so I looked around a bit. It looks like it is because vlans were
> changed to report their type as IFT_L2VLAN. So I made this patch to the
> IPv6 code that fix it for me:
> 
> Index: sys/netinet6/in6_ifattach.c
> ===================================================================
> RCS file: /home/ncvs/src/sys/netinet6/in6_ifattach.c,v
> retrieving revision 1.74.2.3
> diff -u -U 5 -r1.74.2.3 in6_ifattach.c
> --- sys/netinet6/in6_ifattach.c	6 May 2010 06:44:19 -0000	1.74.2.3
> +++ sys/netinet6/in6_ifattach.c	15 Dec 2010 18:33:45 -0000
> @@ -265,10 +265,11 @@
>  	addrlen = sdl->sdl_alen;
>  
>  	/* get EUI64 */
>  	switch (ifp->if_type) {
>  	case IFT_ETHER:
> +	case IFT_L2VLAN:
>  	case IFT_FDDI:
>  	case IFT_ISO88025:
>  	case IFT_ATM:
>  	case IFT_IEEE1394:
>  #ifdef IFT_IEEE80211
> 
> Anything against me committing it? Am I missing something? Should it be
> sorted differently? Should it also be merged?

This looks correct.  Please fix and MFC.  I haven't merged the kernel changes
to change the type of IFT_ for vlan's yet as I was worried about applications
such as this needing to be updated (such as dhcpd for example).  I had thought
that I had not merged the kernel change to 8 though, that it was just in 9?

-- 
John Baldwin