diff --git a/raw.c b/raw.c
index f9a9cc3..7c492db 100644
--- a/raw.c
+++ b/raw.c
@@ -210,7 +210,7 @@ static int raw_recv(struct transport *t, int fd, void *buf, int buflen,
 	return sk_receive(fd, ptr, buflen, hwts, 0);
 }
 
-static int raw_send(struct transport *t, struct fdarray *fda, int event,
+static int raw_send(struct transport *t, struct fdarray *fda, int event, int peer,
 		    void *buf, int len, struct hw_timestamp *hwts)
 {
 	struct raw *raw = container_of(t, struct raw, t);
diff --git a/transport.c b/transport.c
index be7663f..2d71e25 100644
--- a/transport.c
+++ b/transport.c
@@ -42,7 +42,13 @@ int transport_recv(struct transport *t, int fd,
 int transport_send(struct transport *t, struct fdarray *fda, int event,
 		   void *buf, int buflen, struct hw_timestamp *hwts)
 {
-	return t->send(t, fda, event, buf, buflen, hwts);
+	return t->send(t, fda, event, 0, buf, buflen, hwts);
+}
+
+int transport_peer(struct transport *t, struct fdarray *fda, int event,
+		   void *buf, int buflen, struct hw_timestamp *hwts)
+{
+	return t->send(t, fda, event, 1, buf, buflen, hwts);
 }
 
 struct transport *transport_create(enum transport_type type)
diff --git a/transport.h b/transport.h
index 2a9bda6..6a50816 100644
--- a/transport.h
+++ b/transport.h
@@ -57,6 +57,9 @@ int transport_recv(struct transport *t, int fd,
 int transport_send(struct transport *t, struct fdarray *fda, int event,
 		   void *buf, int buflen, struct hw_timestamp *hwts);
 
+int transport_peer(struct transport *t, struct fdarray *fda, int event,
+		   void *buf, int buflen, struct hw_timestamp *hwts);
+
 /**
  * Allocate an instance of the specified transport.
  * @param type  Which transport to obtain.
diff --git a/transport_private.h b/transport_private.h
index 0791c1d..255035d 100644
--- a/transport_private.h
+++ b/transport_private.h
@@ -34,7 +34,7 @@ struct transport {
 	int (*recv)(struct transport *t, int fd, void *buf, int buflen,
 		    struct hw_timestamp *hwts);
 
-	int (*send)(struct transport *t, struct fdarray *fda, int event,
+	int (*send)(struct transport *t, struct fdarray *fda, int event, int peer,
 		    void *buf, int buflen, struct hw_timestamp *hwts);
 
 	void (*release)(struct transport *t);
diff --git a/udp.c b/udp.c
index 07c6b33..c8e35ee 100644
--- a/udp.c
+++ b/udp.c
@@ -165,7 +165,7 @@ static int udp_recv(struct transport *t, int fd, void *buf, int buflen,
 	return sk_receive(fd, buf, buflen, hwts, 0);
 }
 
-static int udp_send(struct transport *t, struct fdarray *fda, int event,
+static int udp_send(struct transport *t, struct fdarray *fda, int event, int peer,
 		    void *buf, int len, struct hw_timestamp *hwts)
 {
 	ssize_t cnt;