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Old 11-26-2004, 02:37 AM   #1
rickthemick
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Registered: Aug 2003
Location: Sweden
Distribution: Debian
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IPIP Tunnel


Why is tunneled packets rejected on host B, if only host A has set up a IPIP tunnel to host B and not viseverse? that is

A ---tunnel--> B and not A <--tunnel-- B

Any ideas?
It seems to be required that both host issue the "tunnel commands" for the tunnel to be complete, even if I only want to send packets in one direction, eg A ---> B

I have tried to set rp_filter on host B to 0 but that doesnt help!
 
Old 11-26-2004, 03:08 AM   #2
Demonbane
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Registered: Aug 2003
Location: Sydney, Australia
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You can't establish a tunnel without configuring both sides.
host B will simply drop these packets because it doesn't know how to deal with them.
 
  


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