Okay, 

	I've got the tunnels and interfaces working with the macipgw
program, but I'm having problems getting routing to work. Here's what I
got:

Given a net, say 10.0.0.0 for macip a tunnel device is set up as 
10.0.0.1:

tun0: flags=43<UP,BROADCAST,RUNNING> mtu 586
        inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255

For routing two entries are added so netstat -rn gives:
Destination        Gateway            Flags     Refs     Use    Mtu  Interface
10                 10.0.0.1           UGS         0        0      -  tun0
10.0.0.1           127.0.0.1          UGS         1        0      -  lo0
 
and netstat -I tun0 gives:
Name  Mtu   Network       Address              Ipkts Ierrs    Opkts Oerrs  Coll
tun0  1500  <Link>                                16     0       11     0  0
tun0  1500  11/24         10.0.0.1                16     0       11     0  0

The problem is that while MacIP devices can send packets through the
tunnel nothing gets sent in the other direction. I can fix this by typing
in:
route add -net 10.0.0.0 10.0.0.1

Everything works fine then.

netstat -I tun0 doesn't change and netstat -r gives:
Destination        Gateway            Flags     Refs     Use    Mtu  Interface
10                 10.0.0.1           UGS         0        0      -  tun0 =>
10                 10.0.0.1           UGS         0        2      -  tun0
10.0.0.1           127.0.0.1          UGS         2        0      -  lo0

So can anyone explain what the little arrow under the interface means?
Whatever it is makes the thing work although I haven't tested the address
timeouts and behavior under load.


Thanks,

Eric

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Eric Wagner                               Phone : 734-647-5525
1962 Cooley Building                      Fax   : 734-763-4540
University of Michigan                    E-Mail: wagnerer@umich.edu
Ann Arbor, MI 48109                       WWW   : http://www.umich.edu/~wagnerer

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