1 files changed, 14 insertions, 0 deletions

diff --git a/README.md b/README.md
index 839afef67..924b2ddb3 100644
--- a/README.md
+++ b/README.md
@@ -210,6 +210,20 @@ $
       --debug-private-lib
               Debug messages for --private-lib option.
 
+       --netfilter.print=name|pid
+              Print  the  firewall installed in the sandbox specified by name
+              or PID. Example:
+
+              $ firejail --net=browser --net=eth0 --netfilter firefox &
+              $ firejail --netfilter.print=browser
+
+       --netfilter6.print=name|pid
+              Print the IPv6 firewall installed in the sandbox  specified  by
+              name or PID. Example:
+
+              $ firejail --net=browser --net=eth0 --netfilter firefox &
+              $ firejail --netfilter6.print=browser
+
 `````
 
 ## New profiles: