gif tunnel problem.

[Lewis Thompson]

Hi,

This is the first time I've looked at gif tunnels and I'm only trying to
do something simple (by that I mean no IPsec, etc.)

  Diagrams are always useful for this, so here goes:

   (int)	  (ext)				(ext)		(int)
xl0 192.168.0.1	  xl1 a.b.c.d	-> 'net -> sis0 w.x.y.z	rl0 192.168.1.1
192.168.0.x/24						 192.168.1.x/24

  That's a pretty poor diagram, sorry.  Basically HostA has is the
default router for 192.168.0.0/24 with in 192.168.0.1 and external ip
a.b.c.d.  HostB is the same for 192.168.1.0/24 with external ip w.x.y.z.

  I want to set up an unencrypted tunnel between the two subnets using
gif.  So far on HostA I have:

ifconfig gif0 create
ifconfig gif0 tunnel a.b.c.d w.x.y.z
ifconfig gif0 192.168.0.1 192.168.1.1

and on HostB:

ifconfig gif0 create
ifconfig gif0 tunnel w.x.y.z a.b.c.d
ifconfig gif0 192.168.1.1 192.168.0.1

  I got these from the IPsec chapter in the handbook.  It states at this
point I should be able to ping 192.168.1.1 from HostA.  This does not
work.

  I see the echo in gif0 (using tcpdump) but it never seems to exit the
gif tunnel and hit xl1.  The same is true for HostB.

netstat -rn on HostA shows:
192.168.1.1        192.168.0.1        UH          0     3183   gif0

with an equivalent entry on HostB.

  What am I doing wrong?  I've tried to follow the chapter as best I can
but it has been little help.  Anybody able to point out the error in my
ways?

  Thanks a lot,

-lewiz.

P.S.
Sorry if this is a duplicate -- it's been a few hours since I originally
posted it and I haven't received it yet... must be my MTA ;)

-- 
I was so much older then, I'm younger than that now.  --Bob Dylan, 1964.
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-| msn:purple at lewiz.net | jabber:lewiz at jabber.org | url:www.lewiz.org |-
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