192.168.1.0/24 is not forwarding through my precise box, or at least i
think that's the problem that's eluding me now.

my cable modem plugs into eth0 on my precise box, and eth1 provides
internet connectivity to my LAN, 192.168.0.0/24.  thereby both my precise
and my raring boxes can ping the outside world, eg 8.8.8.8.

the precise box also has a pppd tunnel, via which it can ping
192.168.1.114.  i was expecting my raring box to hit that address through
the same tunnel, but no such luck so far, and i don't see why not.  any
help?

precise box:  route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         69.180.166.1    0.0.0.0         UG    100    0        0 eth0
69.180.166.0    0.0.0.0         255.255.254.0   U     0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth1
192.0.2.1       0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
192.168.1.0     192.168.1.155   255.255.255.0   UG    0      0        0 ppp0
209.173.221.94  69.180.166.1    255.255.255.255 UGH   0      0        0 eth0

raring box:  route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         192.168.0.6     0.0.0.0         UG    0      0        0 eth0
10.0.3.0        0.0.0.0         255.255.255.0   U     0      0        0
lxcbr0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0

raring comes with something called "ufw", to which i said "stop ufw".  no
change.  i do have a homebrew iptables firewall on the precise box.
purging it didn't help either.  any ideas?
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