Signed-off-by: nickcooper-zhangtonghao <nickcooper-zhangtong...@opencloud.tech>
---
 ovn/utilities/ovn-nbctl.8.xml | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/ovn/utilities/ovn-nbctl.8.xml b/ovn/utilities/ovn-nbctl.8.xml
index 7cd515f..70798dc 100644
--- a/ovn/utilities/ovn-nbctl.8.xml
+++ b/ovn/utilities/ovn-nbctl.8.xml
@@ -173,10 +173,17 @@
         <var>address</var>.  Each <var>address</var> should be either an
         Ethernet address or an Ethernet address followed by IP addresses
         (separated by space and quoted to form a single command-line
-        argument).  The special form <code>unknown</code> is also valid.
+        argument).  The special form <code>unknown</code> is valid.
+        When an OVN logical switch processes a unicast Ethernet frame
+        whose destination MAC address is not in any logical port's addresses
+        column, it delivers it to the port (or ports) whose addresses columns
+        include unknown.  The special form <code>dynamic</code> is also valid.
+        Use this keyword to make ovn-northd generate a globally unique MAC
+        address and choose an unused IPv4 address with the logical port's
+        subnet and store them in the port's dynamic_addresses column.
         Multiple Ethernet addresses or Ethernet+IPs combinations may be set.
-        If no <var>address</var> argument is given, <var>port</var> will have
-        no addresses associated with it.
+        If no <var>address</var> argument is given, <var>port</var> will
+        have no addresses associated with it.
       </dd>
 
       <dt><code>lsp-get-addresses</code> <var>port</var></dt>
-- 
1.8.3.1



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