1 files changed, 6 insertions, 0 deletions

diff --git a/src/man/firejail-profile.txt b/src/man/firejail-profile.txt
index 59f15f75c..50455b038 100644
--- a/src/man/firejail-profile.txt
+++ b/src/man/firejail-profile.txt
@@ -605,6 +605,12 @@ Use this option to deny network access to programs that don't
 really need network access.
 
 .TP
+\fBnetmask address
+Use this option when you want to assign an IP address in a new namespace and
+the parent interface specified by --net is not configured. An IP address and
+a default gateway address also have to be added.
+
+.TP
 \fBveth-name name
 Use this name for the interface connected to the bridge for --net=bridge_interface commands,
 instead of the default one.