diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 807a12c..1225d14 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -1214,6 +1214,7 @@ udp_preattach(struct socket *so, int proto __unused, struct pru_attach_info *ai)
 static void
 udp_attach(netmsg_t msg)
 {
+kprintf("%s on cpu %d\n",__FUNCTION__,mycpuid);
 	struct socket *so = msg->attach.base.nm_so;
 	struct pru_attach_info *ai = msg->attach.nm_ai;
 	struct inpcb *inp;
@@ -1382,6 +1383,7 @@ udp_inswildcardhash(struct inpcb *inp, struct netmsg_base *msg, int error)
 static void
 udp_bind(netmsg_t msg)
 {
+kprintf("%s on cpu %d\n",__FUNCTION__,mycpuid);
 	struct socket *so = msg->bind.base.nm_so;
 	struct inpcb *inp;
 	int error;