diff --git a/tcpdump-4.0.0/interface.h b/tcpdump-4.0.0/interface.h
index 1f03123..79ed0c2 100644
--- a/tcpdump-4.0.0/interface.h
+++ b/tcpdump-4.0.0/interface.h
@@ -370,6 +370,7 @@ extern netdissect_options *gndo;
 #define Nflag gndo->ndo_Nflag 
 #define Oflag gndo->ndo_Oflag 
 #define pflag gndo->ndo_pflag 
+#define Pflag gndo->ndo_Pflag 
 #define qflag gndo->ndo_qflag 
 #define Rflag gndo->ndo_Rflag 
 #define sflag gndo->ndo_sflag 
diff --git a/tcpdump-4.0.0/netdissect.h b/tcpdump-4.0.0/netdissect.h
index cd6f2f1..432d455 100644
--- a/tcpdump-4.0.0/netdissect.h
+++ b/tcpdump-4.0.0/netdissect.h
@@ -107,6 +107,7 @@ struct netdissect_options {
   int ndo_Oflag;                /* run filter code optimizer */
   int ndo_dlt;                  /* if != -1, ask libpcap for the DLT it names*/
   int ndo_pflag;                /* don't go promiscuous */
+  int ndo_Pflag;                /* show pcap collected information */
 
   int ndo_Cflag;                /* rotate dump files after this many bytes */ 
   int ndo_Cflag_count;      /* Keep track of which file number we're writing */
diff --git a/tcpdump-4.0.0/tcpdump.1 b/tcpdump-4.0.0/tcpdump.1
index 50efc31..dd2660f 100644
--- a/tcpdump-4.0.0/tcpdump.1
+++ b/tcpdump-4.0.0/tcpdump.1
@@ -29,7 +29,7 @@ tcpdump \- dump traffic on a network
 .na
 .B tcpdump
 [
-.B \-AdDefIKlLnNOpqRStuUvxX
+.B \-AdDefIKlLnNOpPqRStuUvxX
 ] [
 .B \-B
 .I buffer_size
@@ -392,6 +392,9 @@ Note that the interface might be in promiscuous
 mode for some other reason; hence, `-p' cannot be used as an abbreviation for
 `ether host {local-hw-addr} or ether broadcast'.
 .TP
+.B \-P
+Show pcap collected information (interface where the packet was captured, direction, etc). Linux only.
+.TP
 .B \-q
 Quick (quiet?) output.
 Print less protocol information so output
diff --git a/tcpdump-4.0.0/tcpdump.c b/tcpdump-4.0.0/tcpdump.c
index 4328b30..8dea4b1 100644
--- a/tcpdump-4.0.0/tcpdump.c
+++ b/tcpdump-4.0.0/tcpdump.c
@@ -66,6 +66,7 @@ extern int SIZE_BUF;
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
+#include <net/if.h>
 #ifndef WIN32
 #include <sys/wait.h>
 #include <sys/resource.h>
@@ -535,7 +536,7 @@ main(int argc, char **argv)
 
 	opterr = 0;
 	while (
-	    (op = getopt(argc, argv, "aA" B_FLAG "c:C:d" D_FLAG "eE:fF:G:i:" I_FLAG "KlLm:M:nNOpqr:Rs:StT:u" U_FLAG "vw:W:xXy:Yz:Z:")) != -1)
+	    (op = getopt(argc, argv, "aA" B_FLAG "c:C:d" D_FLAG "eE:fF:G:i:" I_FLAG "KlLm:M:nNOpPqr:Rs:StT:u" U_FLAG "vw:W:xXy:Yz:Z:")) != -1)
 		switch (op) {
 
 		case 'a':
@@ -727,6 +728,10 @@ main(int argc, char **argv)
 			++pflag;
 			break;
 
+		case 'P':
+			++Pflag;
+			break;
+
 		case 'q':
 			++qflag;
 			++suppress_default_print;
@@ -1493,6 +1498,20 @@ print_packet(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
 	++infodelay;
 	ts_print(&h->ts);
 
+#ifdef PF_PACKET
+	if(Pflag){
+		char ifname[IFNAMSIZ];
+		if(if_indextoname(h->ifindex, ifname) != NULL){
+			if(h->direction == PCAP_D_OUT)
+				(void)printf("device %s, direction OUT: ", 
+					ifname);
+			else
+				(void)printf("device %s, direction IN: ", 
+					ifname);
+		}
+	}
+#endif
+
 	print_info = (struct print_info *)user;
 
 	/*
@@ -1672,7 +1691,7 @@ usage(void)
 #endif /* WIN32 */
 #endif /* HAVE_PCAP_LIB_VERSION */
 	(void)fprintf(stderr,
-"Usage: %s [-aAd" D_FLAG "ef" I_FLAG "KlLnNOpqRStu" U_FLAG "vxX]" B_FLAG_USAGE " [ -c count ]\n", program_name);
+"Usage: %s [-aAd" D_FLAG "ef" I_FLAG "KlLnNOpPqRStu" U_FLAG "vxX]" B_FLAG_USAGE " [ -c count ]\n", program_name);
 	(void)fprintf(stderr,
 "\t\t[ -C file_size ] [ -E algo:secret ] [ -F file ] [ -G seconds ]\n");
 	(void)fprintf(stderr,