ipaddr: Update docs (#54587)

Added docs for

* next_nth_usable
* next_usable
* range_usable
* last_usable

Fixes: #50546

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

docs/docsite/rst/user_guide/playbooks_filters_ipaddr.rst

@@ -405,6 +405,34 @@ be automatically converted to a router address (with a ``::1/48`` host address):
 
 .. _6to4: https://en.wikipedia.org/wiki/6to4
 
+Finding IP addresses within a range
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To find usable IP addresses within an IP range, try these ``ipaddr`` filters:
+
+To find the next usable IP address in a range, use ``next_usable`` ::
+
+    # {{ '192.168.122.1/24' | ipaddr('next_usable') }}
+    192.168.122.2
+
+To find the last usable IP address from a range, use ``last_usable``::
+
+    # {{ '192.168.122.1/24' | ipaddr('last_usable') }}
+    192.168.122.254
+
+To find the available range of IP addresses from the given network address, use ``range_usable``::
+
+    # {{ '192.168.122.1/24' | ipaddr('range_usable') }}
+    192.168.122.1-192.168.122.254
+
+To find the next nth usable IP address within a range, use ``next_nth_usable``::
+
+    # {{ '192.168.122.1/24' | next_nth_usable(2) }}
+    192.168.122.3
+
+In this example, ``next_nth_usable`` returns the second usable IP address for the given IP range.
+
+
 IP Math
 ^^^^^^^