Hi Remy, > You're implementing policy based routing. You should use iproute2's ip rule " ip -6 rule ... " to enforce source to gateway mapping. I am. I am using ip -6 rule to enforce route lookup to a separate routing table: "ip -6 rule add from $IPv6_1 table $T_1" but I don't know how to add a default route in table $T_1 that uses the dynamic gateway. If I don't add any default gateway route in $T_1, any address that doesn't match the subnet route ( "ip -6 route add $SUBNET_1 dev $IF_1 table $T_1" ), will be routed to the first default gateway that is listed in "ip -6 route show default". That is obviously not a valid solution because the order of those gateways is not predictable. Thanks. Adrian ----- Original Message ----- From: Remy Mudingay Sent: 10/09/13 03:12 PM To: Adrian Moreno Subject: Re: IPv6 Dynamic gateways in separate routing tables Hi Adrian, You're implementing policy based routing. You should use iproute2's ip rule " ip -6 rule ... " to enforce source to gateway mapping. Remy > On Oct 9, 2013, at 15:20, "Adrian Moreno" <adrian_linux@xxxxxxx> wrote: > > Hi all, > > I have a multihomed system (very similar to the one described in LARTC HowTo Section 4.2. Routing for multiple uplinks/providers) with IPv6 addresses. > > I want to create a routing table per interface to be able to route the traffic depending on the source address using IPv6 addresses and dynamic gateways. > How do I set the default gateway to be dynamic in a separate routing table? > > My current configuration is: > IF_1: Interface 1 > SUBNET_1: the subnet connected to Interface 1 > IPv6_1: IPv6 address configured on Interface 1 > T_1: Routing table for Interface 1 > > IF_2: Interface 2 > SUBNET_2: the subnet connected to Interface 2 > IPv6_2: IPv6 address configured on Interface 2 > T_2: Routing table for Interface 2 > > Configuration: > ip -6 route add $SUBNET_1 dev $IF_1 table $T_1 > ip -6 rule add from $IPv6_1 table $T_1 > > I am clearly missing one route, that should look like: > ip -6 route add default via <GATEWAY_1> tab $T_1 > How should I set this route to use the dynamically obtained gateway? > > The dynamic gateways are listed in the "default" routing table as: > % ip -6 route show default > default via DYNAMIC_GWv6_1 dev IF_1 proto kernel metric .... > default via DYNAMIC_GWv6_2 dev IF_2 proto kernel metric .... > > The order in which these routes are listed is arbitrary (restarting /etc/init.d/networking re-shuffles them). > Is there a way to ensure that a packet being sent from IPv6_1 goes out via the correct gateway (DYNAMIC_GWv6_1) and interface (IF_1)? > > Many thanks in advance for any help. > > Adrian > > > > -- > To unsubscribe from this list: send the line "unsubscribe lartc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe lartc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe lartc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
