diff --git a/6.1/package/network/config/firewall4/patches/999-01-firewall4-add-fullcone-support.patch b/6.1/package/network/config/firewall4/patches/999-01-firewall4-add-fullcone-support.patch
index aef8b3d4..c0f4b5ff 100644
--- a/6.1/package/network/config/firewall4/patches/999-01-firewall4-add-fullcone-support.patch
+++ b/6.1/package/network/config/firewall4/patches/999-01-firewall4-add-fullcone-support.patch
@@ -27,7 +27,7 @@ index b9a4647..7187723 100644
  	option forward		REJECT
  # Uncomment this line to disable ipv6 rules
  #	option disable_ipv6	1
-+	option fullcone '1'
++	option fullcone '0'
  
  config zone
  	option name		lan
@@ -35,8 +35,8 @@ index b9a4647..7187723 100644
  	option input		REJECT
  	option output		ACCEPT
  	option forward		REJECT
-+	option fullcone4 '1'
-+	option fullcone6 '1'
++	option fullcone4 '0'
++	option fullcone6 '0'
  	option masq		1
  	option mtu_fix		1