Add custom routing for DNS server connections

firewall/master.go

@@ -141,6 +141,10 @@ func checkPortmasterConnection(ctx context.Context, conn *network.Connection, _
 		log.Tracer(ctx).Infof("filter: granting own connection %s", conn)
 		conn.Accept("connection by Portmaster", noReasonOptionKey)
 		conn.Internal = true
+
+		// Set tunnel options.
+		setCustomTunnelOptionsForPortmaster(conn)
+
 		return true
 	}