diff -ur ./xelerance-xl2tpd-95445fc-orig/linux/include/linux/if_pppol2tp.h ./xelerance-xl2tpd-95445fc/linux/include/linux/if_pppol2tp.h
--- ./xelerance-xl2tpd-95445fc-orig/linux/include/linux/if_pppol2tp.h	2012-11-05 11:40:49.512975170 +0400
+++ ./xelerance-xl2tpd-95445fc/linux/include/linux/if_pppol2tp.h	2012-11-05 11:39:40.103687634 +0400
@@ -36,6 +36,20 @@
 	__u16 d_tunnel, d_session;	/* For sending outgoing packets */
 };
 
+/* Structure used to connect() the socket to a particular tunnel UDP
+ * socket over IPv6.
+ */
+struct pppol2tpin6_addr {
+       __kernel_pid_t  pid;            /* pid that owns the fd.
+                                        * 0 => current */
+       int     fd;                     /* FD of UDP socket to use */
+
+       __u16 s_tunnel, s_session;      /* For matching incoming packets */
+       __u16 d_tunnel, d_session;      /* For sending outgoing packets */
+
+       struct sockaddr_in6 addr;       /* IP address and port to send to */
+};
+
 /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
  * bits. So we need a different sockaddr structure.
  */
@@ -50,6 +64,17 @@
 	__u32 d_tunnel, d_session;	/* For sending outgoing packets */
 };
 
+struct pppol2tpv3in6_addr {
+       __kernel_pid_t  pid;            /* pid that owns the fd.
+                                        * 0 => current */
+       int     fd;                     /* FD of UDP or IP socket to use */
+
+       __u32 s_tunnel, s_session;      /* For matching incoming packets */
+       __u32 d_tunnel, d_session;      /* For sending outgoing packets */
+
+       struct sockaddr_in6 addr;       /* IP address and port to send to */
+};
+
 /* Socket options:
  * DEBUG	- bitmask of debug message categories
  * SENDSEQ	- 0 => don't send packets with sequence numbers