X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/df7d24fc7ab4353270218c8855c7111075d2d6d2..73262f4d5247e32bc740e38a8e23f5b5abb75e7a:/tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index 1145d198..739f9c8a 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -106,7 +106,7 @@ static int Lflag;			/* list available data link types and exit */
 static int Jflag;			/* list available time stamp types */
 #endif
 #ifdef HAVE_PCAP_SETDIRECTION
-int Pflag = PCAP_D_INOUT;	/* Restrict captured packet by sent/receive direction */
+int Pflag = -1;	/* Restrict captured packet by sent/receive direction */
 #endif
 static char *zflag = NULL;		/* compress each savefile using a specified command (like gzip or bzip2) */
 
@@ -747,7 +747,7 @@ main(int argc, char **argv)
 #endif
 
 	while (
-	    (op = getopt(argc, argv, "aAb" B_FLAG "c:C:d" D_FLAG "eE:fF:G:hHi:" I_FLAG j_FLAG J_FLAG "KlLm:M:nNOp" P_FLAG "qr:Rs:StT:u" U_FLAG "V:vw:W:xXy:Yz:Z:")) != -1)
+	    (op = getopt(argc, argv, "aAb" B_FLAG "c:C:d" D_FLAG "eE:fF:G:hHi:" I_FLAG j_FLAG J_FLAG "KlLm:M:nNOp" P_FLAG "qr:Rs:StT:u" U_FLAG "vV:w:W:xXy:Yz:Z:")) != -1)
 		switch (op) {
 
 		case 'a':
@@ -1334,10 +1334,12 @@ main(int argc, char **argv)
 				    pcap_statustostr(status));
 		}
 #ifdef HAVE_PCAP_SETDIRECTION
-		status = pcap_setdirection(pd, Pflag);
-		if (status != 0)
-			error("%s: pcap_set_direction failed: %s",
-			    device,  pcap_geterr(pd));
+		if (Pflag != -1) {
+			status = pcap_setdirection(pd, Pflag);
+			if (status != 0)
+				error("%s: pcap_setdirection() failed: %s",
+				      device,  pcap_geterr(pd));
+		}
 #endif
 #else
 		*ebuf = '\0';