support interface monitor mode (ignores incoming packets) on set and …

…conf routines

commands.c

@@ -552,6 +552,9 @@ struct intlist Intlist[] = {
 #ifdef IFXF_AUTOCONF6TEMP	/* 6.9+ */
 	{ "autoconfprivacy", "Privacy addresses for IPv6 autoconf", CMPL0 0, 0, intxflags }, /* XXX bkcompat */
 	{ "temporary",	"Temporary addresses for IPv6 autoconf", CMPL0 0, 0, intxflags },
+#endif
+#ifdef IFXF_MONITOR		/* 6.9+ */
+	{ "monitor",	"Monitor mode for incoming traffic",	CMPL0 0, 0, intxflags },
 #endif
         { "trunkport",  "Add child interface(s) to trunk",      CMPL0 0, 0, inttrunkport },
         { "trunkproto", "Define trunkproto",                    CMPL0 0, 0, inttrunkproto },

conf.c

@@ -751,6 +751,10 @@ void conf_ifxflags(FILE *output, int ifs, char *ifname)
 #ifdef IFXF_AUTOCONF6TEMP	/* 6.9+ */
 		if (ifr.ifr_flags & IFXF_AUTOCONF6TEMP)
 			fprintf(output, " temporary\n");
+#endif
+#ifdef IFXF_MONITOR		/* 6.9+ */
+		if (ifr.ifr_flags & IFXF_MONITOR)
+			fprintf(output, " monitor\n");
 #endif
 		if (ifr.ifr_flags & IFXF_WOL)
 			fprintf(output, " wol\n");

if.c

@@ -1821,6 +1821,10 @@ intxflags(char *ifname, int ifs, int argc, char **argv)
 		value = IFXF_AUTOCONF6TEMP;
 	} else if (isprefix(argv[0], "temporary")) {
 		value = IFXF_AUTOCONF6TEMP;
+#endif
+#ifdef IFXF_MONITOR		/* 6.9+ */
+	} else if (isprefix(argv[0], "monitor")) {
+		value = IFXF_MONITOR;
 #endif
 	} else if (isprefix(argv[0], "autoconf6")) {
 		value = IFXF_AUTOCONF6;