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FAQ.md: Correct claims about MPLS.
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An examination of the source code and the tests shows that the FAQ claimed
more for version 2.3 than was really in there.

Reported-by: null pointer <[email protected]>
Signed-off-by: Ben Pfaff <[email protected]>
Acked-by: Pravin B Shelar <[email protected]>
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blp committed Dec 5, 2014
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18 changes: 10 additions & 8 deletions FAQ.md
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Expand Up @@ -1257,14 +1257,16 @@ A: Before version 1.11, Open vSwitch did not support MPLS. That is,
packet. Kernel datapath support is unchanged from earlier
versions.

Open vSwitch version 2.3 can match, push, or pop up to 3 MPLS
labels. Looking past MPLS labels into the encapsulated packet will
still be unsupported. Both userspace and kernel datapaths will be
supported, but MPLS processing always happens in userspace either
way, so kernel datapath performance will be disappointing.

Open vSwitch version 2.4 will have kernel support for MPLS,
yielding improved performance.
Open vSwitch version 2.3 can match, push, or pop a single MPLS
label and look past the MPLS label into the encapsulated packet.
Both userspace and kernel datapaths will be supported, but MPLS
processing always happens in userspace either way, so kernel
datapath performance will be disappointing.

Open vSwitch version 2.4 can match, push, or pop up to 3 MPLS
labels and look past the MPLS label into the encapsulated packet.
It will have kernel support for MPLS, yielding improved
performance.

### Q: I'm getting "error type 45250 code 0". What's that?

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