Patrick McHardy wrote:
Andrew Morton wrote:
Distribution: iptables 1.4.0 was used with kernel 2.6.23 and
iptables 1.3.8
with 2.6.22.15
Hardware Environment: 3 interfaces, 2 interfaces bridged to form
br0, and
another connects to internet using pppoe.
Software Environment: bridge, multipath routing
Problem Description: when a system is configured as a bridge with IP
assigned
to br0 interface, and at the same time it is configured to have
multipath
weighted default route, and one of the default route is NAT-ed and
another of
the default route is not NAT-ed, then it is NAT-ed interface will
occasionally
get packets leaking out to it with packets with private IPs.
That is most likely because the route changes over time (when the cache
is flushed) and the NAT mappings for the connection have been set up on
a different interface. The way to properly do this is to add routing
rules based on fwmark and use CONNMARK to bind a connection to one of
the interfaces after the initial multipath routing decision.
First of all, I would like to say a big thank you to all of you takes
interest in replying my post/email. I have altered the distribution
slightly and the kernel bug list is removed.
It seems from your reply, what is implied is that I cannot change route
within a connection, and whatever things I do, I must make sure that the
route remains the same for a particular netfilter connection ?
Regards.
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