diff --git a/plugins/main/ipvlan/ipvlan.go b/plugins/main/ipvlan/ipvlan.go
index fe4fc794..65e37b42 100644
--- a/plugins/main/ipvlan/ipvlan.go
+++ b/plugins/main/ipvlan/ipvlan.go
@@ -32,7 +32,6 @@ type NetConf struct {
 	plugin.NetConf
 	Master string `json:"master"`
 	Mode   string `json:"mode"`
-	IPMasq bool   `json:"ipMasq"`
 	MTU    int    `json:"mtu"`
 }
 
@@ -138,13 +137,6 @@ func cmdAdd(args *skel.CmdArgs) error {
 		return err
 	}
 
-	if n.IPMasq {
-		chain := "CNI-" + n.Name
-		if err = ip.SetupIPMasq(ip.Network(&result.IP4.IP), chain); err != nil {
-			return err
-		}
-	}
-
 	return result.Print()
 }
 
diff --git a/plugins/main/macvlan/macvlan.go b/plugins/main/macvlan/macvlan.go
index 5dd9b6c3..236693e0 100644
--- a/plugins/main/macvlan/macvlan.go
+++ b/plugins/main/macvlan/macvlan.go
@@ -32,7 +32,6 @@ type NetConf struct {
 	plugin.NetConf
 	Master string `json:"master"`
 	Mode   string `json:"mode"`
-	IPMasq bool   `json:"ipMasq"`
 	MTU    int    `json:"mtu"`
 }
 
@@ -142,13 +141,6 @@ func cmdAdd(args *skel.CmdArgs) error {
 		return err
 	}
 
-	if n.IPMasq {
-		chain := "CNI-" + n.Name
-		if err = ip.SetupIPMasq(ip.Network(&result.IP4.IP), chain); err != nil {
-			return err
-		}
-	}
-
 	return result.Print()
 }