doc: Update doc for `ip pim use-source ..` command

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

diff --git a/doc/user/pim.rst b/doc/user/pim.rst
index 919dc51f697491311ece845ca78bb4ed4c4c78d3..d30a5ed6473ea40a5fc48e4ada90ccc759b03611 100644 (file)
--- a/doc/user/pim.rst
+++ b/doc/user/pim.rst
@@ -252,6 +252,13 @@ is in a vrf, enter the interface command with the vrf keyword at the end.
    reports on the interface. Refer to the next `ip igmp` command for IGMP
    management.
 
+.. index:: [no] ip pim use-source A.B.C.D
+.. clicmd:: [no] ip pim use-source A.B.C.D
+
+   If you have multiple addresses configured on a particular interface
+   and would like pim to use a specific source address associated with
+   that interface.
+
 .. index:: ip igmp
 .. clicmd:: ip igmp