doc: Explicitly call out need to add snmp module

The documentation implied how snmp works.  Explicitly call
it out a bit more for future users.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

diff --git a/doc/user/snmp.rst b/doc/user/snmp.rst
index b770b236bdcd4b88e3017bca8dcffc907f9dd314..ebbe178e0bea8d55335c480e305101f268cfd3c1 100644 (file)
--- a/doc/user/snmp.rst
+++ b/doc/user/snmp.rst
@@ -11,7 +11,9 @@ a SNMP agent using the the AgentX protocol (:rfc:`2741`) and make the
 routing protocol MIBs available through it.
 
 Note that SNMP Support needs to be enabled at compile-time and loaded as module
-on daemon startup. Refer to :ref:`loadable-module-support` on the latter.
+on daemon startup. Refer to :ref:`loadable-module-support` on the latter.  If
+you do not start the daemons with snmp module support snmp will not work
+properly.
 
 .. _getting-and-installing-an-snmp-agent: