priv: avoid a socket leak when interface is already in promisc

diff --git a/src/daemon/priv-linux.c b/src/daemon/priv-linux.c
index 62eaf4ab0d0503361b895574c2af0fbf5e162513..c5736155c607ec722e164170ce222a9b5c9d099c 100644 (file)
--- a/src/daemon/priv-linux.c
+++ b/src/daemon/priv-linux.c
@@ -281,8 +281,10 @@ asroot_iface_promisc_os(const char *name)
                return rc;
        }
 
-       if (ifr.ifr_flags & IFF_PROMISC)
+       if (ifr.ifr_flags & IFF_PROMISC) {
+               close(s);
                return 0;
+       }
        ifr.ifr_flags |= IFF_PROMISC;
        if (ioctl(s, SIOCSIFFLAGS, &ifr) == -1) {
                rc = errno;