change mac address via ifconfig causes corrupted redzone

[Rong-En Fan]

Hi all,

I'm running -current as of Jan 15 on i386. After upgrading, I saw
following messages

# ifconfig fxp0 link aa:bb:cc:dd:ee:ff
ifconfig: (malloc) Corrupted redzone 1 byte after 0xa000150 (size 18) (0x0)

I tried with MALLOC_OPTIONS=A to get a core dump, but the backtrace
does not help (corrupted). My /etc/malloc.conf is 'aj'.

Regards,
Rong-En Fan