diff --git a/package/network/services/ppp/patches/540-save-pppol2tp_fd_str.patch b/package/network/services/ppp/patches/540-save-pppol2tp_fd_str.patch
new file mode 100644
index 0000000000..7dd2ad844c
--- /dev/null
+++ b/package/network/services/ppp/patches/540-save-pppol2tp_fd_str.patch
@@ -0,0 +1,13 @@
+--- a/pppd/plugins/pppol2tp/pppol2tp.c
++++ b/pppd/plugins/pppol2tp/pppol2tp.c
+@@ -148,6 +148,10 @@ static int setdevname_pppol2tp(char **ar
+ 		fatal("PPPoL2TP kernel driver not installed");
+ 	}
+ 
++	pppol2tp_fd_str = strdup(*argv);
++	if (pppol2tp_fd_str == NULL)
++		novm("PPPoL2TP FD");
++
+ 	/* Setup option defaults. Compression options are disabled! */
+ 
+ 	modem = 0;