i have a couple of questions regarding to IPv6 processing in latest
	ipfilter (3.4.16).  could you clarify?  i hope to supply with some
	patches if necessary.

itojun


fil.c:fr_makefrip()
	the initialization of variable "plen" is not consistent across IPv4 and
	IPv6.  for IPv4, it is the total packet length.  for IPv6,
	it is set to payload length (except IPv6 header).

	ip6->ip6_plen can be 0 if the packet is IPv6 jumbogram, you will
	want to do something about it.

fil.c:fr_check()
	the initialization of variable "len" is not consistent across IPv4 and
	IPv6.  for IPv4, it is the total packet length.  for IPv6,
	it is set to payload length (except IPv6 header).

	ip6->ip6_plen can be 0 if the packet is IPv6 jumbogram, you will
	want to do something about it.

	if both __sgi and USE_INET6 are true, hbuf is too short.

	please do "(v == 4 && p == IPPROTO_ICMP)", as there will be no ICMPv4
	traffic over IPv6.

>        if ((p == IPPROTO_TCP || p == IPPROTO_UDP || p == IPPROTO_ICMP
># ifdef USE_INET6
>            || (v == 6 && p == IPPROTO_ICMPV6)
># endif
>           )) {
	
fil.c:fr_ifpaddr()
	on KAME platforms, may need to take care of embedded scope identifiers.
	in sin6.sin6_addr.s6_addr16[1].

ip_fil.c:send_ip()
	why ip6_hlim is set to 127?

ip_fil.c:send_reset()
	packet size may possibly overrun mbuf, on certain operating systems
	(like MSIZE == 128 and sizeof(void *) == 8).