Sorry Julian, I wrongly sent my reply to you!
On T 31 Mar, 2009, at 22:38 , Julian Elischer wrote:
zgabe wrote:
Hi All, I am using laptop, FreeBSD 7.1 connecting to two ISPs (wlan
and ppp) and I
have IPv6 addresses. 'netstat -rn' says there is only one default
gateway
(for example wlan's default gateway). My problem is the following:
If I ping the ppp tunnel from an other computer, my laptop recieves
the
ICMP6 echo request over the ppp tunnel, but it answers over the wlan
interface. I read some similar posts (only ipv4) about forwarding
with IPFW,
but I was unable to solve my problem until now.
[...]
the theory with multihoming is that unless you are the holder of a
class-C (/24) you basically have to do it using NAT.
You have to make some subset of your traffic use one NAT while the
remainder uses another (or is untranslated).
Unfortunately we don't have NAT for IPV6. I don't know how that
gets solved..
I am not sure I understand how NAT would solve the routing problem.
Doesn't a packet have the next hop set according to the destination,
that is anything not for a locally attached network will go to the
default router?
Zgabe is correct in trying to use fwd, I use that to route packets
according to the source. I use this method, in ipv4, although perhaps
too intrusively as I also fwd packets that should go to the default
route (which could be instead just accept'ed), but this is another
topic.
For zgabe problem, aren't packets coming from the pppaddress going
through the ppp interface. So why don't you try to select them by the
interface (and the direction they go through it, as in out xmit ppp)
rather than by protocol? Not sure how will you enter an ipv6 address
as a forwarding one, it does not work on my setup (macos).
g
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