[Jool-list] Trying to route local traffic via SIIT instance

[Ben Hardill]

Hi,

I've been using Jool as part of a desktop ISP I've been playing with. I
have a Pi as a PPPoE concentrator, another acting as a home PPPoE router
and finally a third acting as a end user device (e.g. laptop/phone).

I have a SIIT instance running on the router device mapping the local
IPv4 range with the IPv6 prefix and the reveres mapping happening on the
PPPoE concentrator. This is all working well with the end user device
able to access the IPv4 address space.


  **************     1     **************    2    **************
  *     isp    *  <----->  *   router   * <-----> *   laptop   *
  **************           **************         **************


1. IPv6 only
2. IPv4 & IPv6

isp
---

eth0 -> WAN IPv4 and IPv6 to the world

eth1 -> PPPoE to router

jool ->
    jool instance add "example" --iptables  --pool6 64:ff9b::/96

    ip6tables -t mangle -A PREROUTING -j JOOL --instance "example"
    iptables -t mangle -A PREROUTING -j JOOL --instance "example"

    jool -i "example" pool4 add -i 192.168.1.94 61000-65535
    jool -i "example" pool4 add -t 192.168.1.94 61000-65535
    jool -i "example" pool4 add -u 192.168.1.94 61000-65535



router
------

eth0 -> PPPoE to ISP comes with only a IPv6 and a 2 delegated IPv6
ranges,  fd12:3456:789a:2::/64 for handing out to LAN device and
fd12:3456:789a:f464:2::/96 to use as the prefix for the 464 translation

eth1 -> 10.66.0.1/24 with
 - DHCP handing out the rest of 10.66.0.0/24 to the LAN
 - RADVD handing out /64

jool ->
    jool_siit instance add "example" --iptables --pool6 64:ff9b::/96	
    jool_siit -i "example" eamt add fd12:3456:789a:f464:2::/96 10.66.0.0/24
    ip6tables -t mangle -A PREROUTING -j JOOL_SIIT --instance "example"
    iptables -t mangle -A PREROUTING -j JOOL_SIIT --instance "example"


The problem is on the router device, since it only has a IPv6 link to
outside world and no IPv4 default route, I'm having problems reaching
IPv4 addresses from the router.

Can anybody suggest what iptables rules and/or route I need to add so
IPv4 traffic from the router gets mapped through jool?


Thank,

Ben
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