diff -up pptp-1.7.2/pptp_gre.c.nested pptp-1.7.2/pptp_gre.c

--- pptp-1.7.2/pptp_gre.c.nested	2011-12-06 16:45:34.605691678 +0000

+++ pptp-1.7.2/pptp_gre.c	2011-12-06 19:07:14.169449813 +0000

@@ -23,6 +23,10 @@

 #include "pqueue.h"

 #include "test.h"

+/* globals from pptp.c */

+extern struct in_addr localbind;

+extern int rtmark;

+

 #define PACKET_MAX 8196

 /* test for a 32 bit counter overflow */

 #define WRAPPED( curseq, lastseq) \

@@ -82,8 +86,6 @@ uint64_t time_now_usecs(void)

 int pptp_gre_bind(struct in_addr inetaddr)

 {

     struct sockaddr_in src_addr, loc_addr;

-    extern struct in_addr localbind;

-    extern int rtmark;

     int s = socket(AF_INET, SOCK_RAW, PPTP_PROTO);

     if (s < 0) { warn("socket: %s", strerror(errno)); return -1; }

 #ifdef SO_MARK