valgrind support
diff --git a/regress/multiplex.sh b/regress/multiplex.sh
index 6176153..acb9234 100644
--- a/regress/multiplex.sh
+++ b/regress/multiplex.sh
@@ -90,7 +90,7 @@
netcat_pid=$!
${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -L$OBJ/unix-2.fwd:$OBJ/unix-1.fwd otherhost >>$TEST_SSH_LOGFILE 2>&1
${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -R$OBJ/unix-3.fwd:$OBJ/unix-2.fwd otherhost >>$TEST_SSH_LOGFILE 2>&1
-$NC -U $OBJ/unix-3.fwd < /dev/null > ${COPY}
+$NC -U $OBJ/unix-3.fwd < /dev/null > ${COPY} 2>/dev/null
cmp ${DATA} ${COPY} || fail "ssh: corrupted copy of ${DATA}"
kill $netcat_pid 2>/dev/null
rm -f ${COPY} $OBJ/unix-[123].fwd