diff --git a/configuration/dn42/default.nix b/configuration/dn42/default.nix
index 5ef8c8f..93ae00e 100644
--- a/configuration/dn42/default.nix
+++ b/configuration/dn42/default.nix
@@ -10,6 +10,8 @@
     "net.ipv6.conf.all.forwarding" = true;
   };
 
+  networking.firewall.checkReversePath = false;
+
   # Open Firewall for BGP
   networking.firewall.allowedTCPPorts = [ 179 ];
   # Open Fireall for OSPF