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Date:      Mon, 13 Nov 2000 14:18:24 -0700
From:      "Craig W. Penner" <cpenner@streamflo.com>
To:        freebsd-questions@freebsd.org
Cc:        archie@freebsd.org
Subject:   SKIP port on 4.x
Message-ID:  <3A0FF830.19628.ACEDABE3@localhost>

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Has anyone successfully used the SKIP port (skip-1.0) on a 
machine running FreeBSD 4.x?  I've had it running perfectly well on 
about half a dozen 3.x machines for some time now, but it fails on 
both of the machines that I've upgraded to 4.2-BETA.

On those 4.2-BETA machines, SKIP compiles, installs, loads and 
appears to run, except that it apparently won't correctly process 
incoming packets from other SKIP-enabled hosts.

Watching the traffic using tcpdump on the 4.x box shows that it 
appears to send properly encapsulated packets and shows that 
received packets do appear at the interface, (for example, pinging a 
3.x SKIP host from the 4.x SKIP host creates ip-proto-57 traffic 
going both directions between these two hosts, but ping reports 
98% packet loss.  That's another odd thing--two or three packets 
out of 100 will get through, but with really high latency).

I've done enough testing and successfully configured enough 3.x 
SKIP hosts that I'm fairly confident that I haven't simply screwed up 
the installation (I've double-checked all of my keys, etc.).  Has the 
4.x kernel introduced an incompatibility with SKIP?  Or is there 
something specific that I need to now configure in the 4.x kernel 
that was either there by default or not necessary in 3.x?

Any assistance would be greatly appreciated;  I'd like to be able to 
upgrade to 4.x-stable without breaking all of my VPNs.

Thanks,
Craig

------
Craig W. Penner                             Phone: (780) 468-6789
MIS Manager                                   Fax: (780) 469-7724
Stream-Flo Industries Ltd.                 E-mail: cpenner@streamflo.com


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