ipv6 addresses on loopback broken

Hello,

It looks like IPv6 addresses bound to loopback interfaces no longer
work.

% ifconfig lo0
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=3<RXCSUM,TXCSUM>
        inet 127.0.0.1 netmask 0xff000000 
        inet6 ::1 prefixlen 128 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5 
        inet6 2607:f178:0:3::12 prefixlen 128 

% route -n get -inet6 2607:f178:0:3::12
   route to: 2607:f178:0:3::12
destination: ::
       mask: default
    gateway: 2607:f178::1
  interface: mxge0
      flags: <UP,GATEWAY,DONE,STATIC>
 recvpipe  sendpipe  ssthresh  rtt,msec    mtu        weight    expire
       0         0         0         0      1500         1         0 

% uname -a
FreeBSD exodus 9.0-CURRENT FreeBSD 9.0-CURRENT #8: Sat Sep  5 10:23:33 EDT 2009
    bw_at_exodus:/usr/obj/usr/src/sys/COMRADE  amd64

bw.