It doesn't work to hook up an active-backup bond on one switch to an
active-backup bond on another switch, because they might pick different
active interfaces and therefore not pass any traffic.

For balance-slb the results shouldn't be as obviously bad, but balance-slb
is definitely not designed considering that situation, so this commit
generalizes the advice across balance-slb also.

Signed-off-by: Ben Pfaff <b...@nicira.com>
---
 vswitchd/vswitch.xml |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 7b30ce8..480fd63 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -802,8 +802,13 @@
 
     <group title="Bonding Configuration">
       <p>A port that has more than one interface is a ``bonded port.'' Bonding
-      allows for load balancing and fail-over.  Some kinds of bonding will
-      work with any kind of upstream switch:</p>
+      allows for load balancing and fail-over.</p>
+
+      <p>
+        The following types of bonding will work with any kind of upstream
+        switch.  On the upstream switch, do not configure the interfaces as a
+        bond:
+      </p>
 
       <dl>
         <dt><code>balance-slb</code></dt>
-- 
1.7.2.5

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