This is my specific setup:
~~~~~~~~~~~~~~~~~~~~~~
{ Internet }
~~~~~~~~~~~~~~~~~~~~~~
|
---------------
| ISP |
---------------
|
DSL
|
---------------
| 64.96.78.45 |
| |
| DSL |
| Router |
| |
| 192.168.68.1|
---------------
|
|
Ethernet
|
|
-----------------------
| 192.168.68.254 |
| eth0 |
| |
| LEAF ROUTER |
| |
| eth1 |
| 192.168.1.1 |
-----------------------
|
|
Ethernet
|
|
----------------
| Workstation |
| 192.168.1.50 |
----------------
The LEAF Router is running Oxygen 1.8.
The DSL router has a static external IP and
is performing masquerading NAT on the internal
interface on the 192.168.68.0 network. Both
interfaces of the LEAF router are static as is
the IP of the workstation. The LEAF is also
performing masquerading NAT.
The default gw of the LEAF router is set to
192.168.68.1 - the internal interface of the DSL
router. The default gw of the workstation is set to
192.168.1.1 - the internal interface of the LEAF
router.
My symptoms are these: from the LEAF router I
can ping all of the devices on the local netork
as well as the greater Internet. However from the
workstation I can only ping as far as the external
(eth0 - 192.168.68.254) interface of the LEAF
router. I can not hit the internal interface of the
DSL router.
I have disabled checking for martians on the external
interface of the LEAF router. I can not see anything
wrong with this setup but I must be missing something
basic. Any pointers are greatly appreciated.
Thanks in advance
#ip addr show
1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
link/ether 00:e0:29:6b:0f:0b brd ff:ff:ff:ff:ff:ff
inet 192.168.68.254/24 brd 192.168.68.255 scope global eth0
3: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
link/ether 00:e0:29:6b:0f:0f brd ff:ff:ff:ff:ff:ff
inet 192.168.1.1/24 brd 192.168.1.255 scope global eth1
#ip route sh
192.168.1.1 dev eth1 scope link
192.168.1.0 dev eth1 scope link
192.168.68.254 dev eth0 scope link
192.168.68.0 dev eth0 scope link
192.168.68.0/24 dev eth0 proto kernel scope link src 192.168.68.254
192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.1
127.0.0.0/8 dev lo scope link
default via 192.168.68.1 dev eth0
#ip neighbour sh
192.168.68.1 dev eth0 lladdr 00:20:6f:10:d8:cb nud reachable
192.168.1.50 dev eth1 lladdr 00:80:c8:8b:9e:01 nud reachable
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