--- NetworkManager-0.9.0.orig/src/nm-device.c	2011-09-08 10:55:07.799758955 -0300
+++ NetworkManager-0.9.0/src/nm-device.c	2011-09-08 10:55:53.086427728 -0300
@@ -2522,7 +2522,7 @@
 	add_share_rule (req, "filter", "FORWARD --in-interface %s --out-interface %s --jump ACCEPT", ip_iface, ip_iface);
 	add_share_rule (req, "filter", "FORWARD --source %s/%s --in-interface %s --jump ACCEPT", str_addr, str_mask, ip_iface);
 	add_share_rule (req, "filter", "FORWARD --destination %s/%s --out-interface %s --match state --state ESTABLISHED,RELATED --jump ACCEPT", str_addr, str_mask, ip_iface);
-	add_share_rule (req, "nat", "POSTROUTING --source %s/%s --destination ! %s/%s --jump MASQUERADE", str_addr, str_mask, str_addr, str_mask);
+	add_share_rule (req, "nat", "POSTROUTING --source %s/%s ! --destination %s/%s --jump MASQUERADE", str_addr, str_mask, str_addr, str_mask);
 
 	nm_act_request_set_shared (req, TRUE);