Only debug log dhcp packet info if packet is found.

No functional change. vmd(8) was being chatty and incorrect.

diff --git a/usr.sbin/vmd/vionet.c b/usr.sbin/vmd/vionet.c
index 5ed06fb..6f4b741 100644 (file)
--- a/usr.sbin/vmd/vionet.c
+++ b/usr.sbin/vmd/vionet.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vionet.c,v 1.10 2024/02/05 21:58:09 dv Exp $  */
+/*     $OpenBSD: vionet.c,v 1.11 2024/02/09 14:52:39 dv Exp $  */
 
 /*
  * Copyright (c) 2023 Dave Voutila <dv@openbsd.org>
@@ -764,8 +764,9 @@ vionet_notify_tx(struct virtio_dev *dev)
                if (vionet->local) {
                        dhcpsz = dhcp_request(dev, iov->iov_base, iov->iov_len,
                            &dhcppkt);
-                       log_debug("%s: detected dhcp request of %zu bytes",
-                           __func__, dhcpsz);
+                       if (dhcpsz > 0)
+                               log_debug("%s: detected dhcp request of %zu bytes",
+                                   __func__, dhcpsz);
                }
 
                /* Write our packet to the tap(4). */