diff --git a/NEBULA/nebula2.0.md b/NEBULA/nebula2.0.md
index f4c8a1d..b79e7ae 100644
--- a/NEBULA/nebula2.0.md
+++ b/NEBULA/nebula2.0.md
@@ -431,6 +431,7 @@ subnet 192.168.100.0 netmask 255.255.255.0 {
   option broadcast-address 192.168.100.255;
   default-lease-time 600;
   max-lease-time 7200;
+  abandon-lease-time 0;
 }
 ```