diff --git a/sshuttle/methods/ipfw.py b/sshuttle/methods/ipfw.py
index 4aeffeb..d74dc60 100644
--- a/sshuttle/methods/ipfw.py
+++ b/sshuttle/methods/ipfw.py
@@ -205,7 +205,7 @@ class Method(BaseMethod):
 
         if subnets:
             # create new subnet entries
-            for _, swidth, sexclude, snet in sorted(subnets,
+            for _, swidth, sexclude, snet, fport, lport in sorted(subnets,
                                                     key=lambda s: s[1],
                                                     reverse=True):
                 if sexclude: