Added pcap_if.exe utility, updated net_ne2000.c and updated Makefile.mingw.

src/pcap_if.c

@@ -0,0 +1,56 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Simple program to show usable interfaces for WinPcap.
+ *
+ *		Based on the "libpcap" example.
+ *
+ * Version:	@(#)pcap_if.c	1.0.1	2017/05/08
+ *
+ * Author:	Fred N. van Kempen, <decwiz@yahoo.com>
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <pcap.h>
+
+
+int
+main(int argc, char **argv)
+{
+    char errbuf[PCAP_ERRBUF_SIZE];
+    pcap_if_t *alldevs;
+    pcap_if_t *d;
+    int i=0;
+    
+    /* Retrieve the device list from the local machine */
+    if (pcap_findalldevs(&alldevs, errbuf) == -1) {
+	fprintf(stderr,"Error in pcap_findalldevs_ex: %s\n", errbuf);
+	exit(1);
+    }
+    
+    /* Print the list */
+    for (d= alldevs; d != NULL; d= d->next) {
+	printf("%d. %s\n", ++i, d->name);
+	if (d->description)
+		printf("   (%s)\n", d->description);
+	  else
+		printf("   (No description available)\n");
+	printf("\n");
+	i++;
+    }
+    
+    if (i == 0) {
+	printf("No interfaces found! Make sure WinPcap is installed.\n");
+	return(i);
+    }
+
+    /* Not really needed as we are about to exit, but oh-well. */
+    pcap_freealldevs(alldevs);
+
+    return(i);
+}