ipfw forward to ipv6 addresses

[umage]

Hi, on freebsd 8.2 ipfw assumes when parsing the commandline that the 
target is an ipv4 address. Therefore,
$ipfw add 1000 forward $target ip6 from $source to any out keep-state
(to achieve source-based routing on a multihomed machine) will mess up 
and parse it as 0.0.7.210,3 or whatever.

I found 5 year old bugreports on this:
http://www.freebsd.org/cgi/query-pr.cgi?pr=104921
http://www.freebsd.org/cgi/query-pr.cgi?pr=117214

I also found this discussion from year 2003:
https://www.sixxs.net/forum/?msg=setup-52946
where one of the users actually wrote a patch - for freebsd 4.8 - which 
is still there, however the code has completely changed so only someone 
who knows how ipfw is coded can do this.

I also checked the sources of ipfw2.c, and found

         case TOK_FORWARD: {
                 ipfw_insn_sa *p = (ipfw_insn_sa *)action;
                 char *s, *end;

                 NEED1("missing forward address[:port]");

                 action->opcode = O_FORWARD_IP;
                 action->len = F_INSN_SIZE(ipfw_insn_sa);

                 /*
                  * In the kernel we assume AF_INET and use only
                  * sin_port and sin_addr. Remember to set sin_len as
                  * the routing code seems to use it too.
                  */
                 p->sa.sin_family = AF_INET;
                 p->sa.sin_len = sizeof(struct sockaddr_in);
                 p->sa.sin_port = 0;

Which indicates that no attempt at ipv6 support was made when this was 
coded.
Can this be solved somehow? Thanks.