Index: src/openvpn/tun.c
--- src/openvpn/tun.c.orig	2012-11-22 13:07:51.000000000 +0100
+++ src/openvpn/tun.c	2013-01-09 08:53:45.000000000 +0100
@@ -1671,7 +1671,8 @@
 #elif defined(TARGET_SOLARIS)
 
 #ifndef TUNNEWPPA
-#error I need the symbol TUNNEWPPA from net/if_tun.h
+#warning I usually need the symbol TUNNEWPPA from net/if_tun.h -- using a shameless local copy taken from TUN 1.1
+#define TUNNEWPPA   (('T'<<16) | 0x0001)
 #endif
 
 void