fix parsing postup/postdown

logic/gateway.go

@@ -317,7 +317,7 @@ func firewallNFTCommandsCreateEgress(networkInterface string, gatewayInterface s
 		postUp += "nft add chain nat POSTROUTING ; "
 		postUp += "nft add rule ip nat POSTROUTING oifname " + gatewayInterface + " counter masquerade ; "
 
-		postDown += "nft flush table nat; "
+		postDown += "nft flush table nat ; "
 	}
 
 	return postUp, postDown

netclient/wireguard/common.go

@@ -474,7 +474,7 @@ func UpdateWgInterface(file, privateKey, nameserver string, node models.Node) er
 		}
 	}
 	if node.PostDown != "" {
-		parts := strings.Split(node.PostDown, ";")
+		parts := strings.Split(node.PostDown, " ; ")
 		for i, part := range parts {
 			if i == 0 {
 				wireguard.Section(section_interface).Key("PostDown").SetValue(part)