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   xl1 a.b.c.d   -> 'net -> sis0 w.x.y.z rl0
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 with in and external ip
a.b.c.d.  HostB is the same for 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

and on HostB:

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

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

  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:        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

  Thanks a lot,


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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