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[Discuss] Does "fou" decapsulation work?
- Subject: [Discuss] Does "fou" decapsulation work?
- From: worley at alum.mit.edu (Dale R. Worley)
- Date: Sun, 10 Dec 2017 11:05:18 -0500
I've been trying to use "fou" decapsulation, i.e., "ip fou add port ...". There are a few references on the web that suggest this feature has been in the kernel for several years, and Fedora 26 has commands to support it. But it doesn't seem to actually work when I try it (with kernel 4.13.16-202.fc26.x86_64) -- UDP packets directed to the decapsulation port are dropped and cause ICMP "protocol 17 unreachable" messages to be generated (according to tcpdump). I was wondering if anyone has used this feature. (The details of my testcase are in https://bugzilla.redhat.com/show_bug.cgi?id=1524180 .) Dale
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