FAQ.md: Mention Linux version that first could handle IPFIX flow monitoring.

I think that the critical commit is commit 4490108b4a5ada (openvswitch:
Allow OVS_USERSPACE_ATTR_USERDATA to be variable length.), which first
appeared in Linux 3.10.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Romain Lenglet <romain.lenglet@oracle.com>

diff --git a/FAQ.md b/FAQ.md
index c2f3c5d..5ee529c 100644 (file)
--- a/FAQ.md
+++ b/FAQ.md
@@ -216,8 +216,9 @@ A: Tunnel virtual ports are not supported, as described in the
 
 ### Q: What Linux kernel versions does IPFIX flow monitoring work with?
 
-A: IPFIX flow monitoring requires the Linux kernel module from Open
-   vSwitch version 1.10.90 or later.
+A: IPFIX flow monitoring requires the Linux kernel module from Linux
+   3.10 or later, or the out-of-tree module from Open vSwitch version
+   1.10.90 or later.
 
 ### Q: Should userspace or kernel be upgraded first to minimize downtime?