--- a/pppd/plugins/rp-pppoe/pppoe.h
+++ b/pppd/plugins/rp-pppoe/pppoe.h
@@ -48,11 +48,7 @@
 #endif
 
 /* Ugly header files on some Linux boxes... */
-#if defined(HAVE_LINUX_IF_H)
-#include <linux/if.h>
-#elif defined(HAVE_NET_IF_H)
 #include <net/if.h>
-#endif
 
 #ifdef HAVE_NET_IF_TYPES_H
 #include <net/if_types.h>
@@ -80,22 +76,8 @@ typedef unsigned long UINT32_t;
 #error Could not find a 32-bit integer type
 #endif
 
-#ifdef HAVE_LINUX_IF_ETHER_H
-#include <linux/if_ether.h>
-#endif
-
 #include <netinet/in.h>
-
-#ifdef HAVE_NETINET_IF_ETHER_H
-#include <sys/types.h>
-
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifndef HAVE_SYS_DLPI_H
-#include <netinet/if_ether.h>
-#endif
-#endif
+#include <net/ethernet.h>
 
 
 
--- a/pppd/plugins/rp-pppoe/pppoe-discovery.c
+++ b/pppd/plugins/rp-pppoe/pppoe-discovery.c
@@ -16,6 +16,7 @@
 #include <string.h>
 
 #include "pppoe.h"
+#include "pppd/pppd.h"
 
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -717,6 +718,23 @@ char *xstrdup(const char *s)
     return ret;
 }
 
+void
+error(char *fmt, ...)
+{
+    va_list pvar;
+
+#if defined(__STDC__)
+    va_start(pvar, fmt);
+#else
+    char *fmt;
+    va_start(pvar);
+    fmt = va_arg(pvar, char *);
+#endif
+
+    fprintf(stderr, fmt, pvar);
+    va_end(pvar);
+}
+
 void usage(void)
 {
     fprintf(stderr, "Usage: pppoe-discovery [options]\n");
--- a/pppd/plugins/rp-pppoe/Makefile.linux
+++ b/pppd/plugins/rp-pppoe/Makefile.linux
@@ -33,7 +33,7 @@ pppoe-discovery: pppoe-discovery.o debug
 	$(CC) $(CFLAGS) -o pppoe-discovery pppoe-discovery.o debug.o
 
 pppoe-discovery.o: pppoe-discovery.c
-	$(CC) $(CFLAGS) -c -o pppoe-discovery.o pppoe-discovery.c
+	$(CC) $(CFLAGS) -I../../.. -c -o pppoe-discovery.o pppoe-discovery.c
 
 debug.o: debug.c
 	$(CC) $(CFLAGS) -c -o debug.o debug.c