From 8fda4b4620ca2b23152ca805d14c7cde1083fe31 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
Date: Tue, 1 Oct 2019 16:08:28 +0200
Subject: [PATCH] Report error on dhcp_release

If no IPv4 address is present on given interface, the tool would not
send any request. It would not report any error at the same time. Report
error if request send failed.

Signed-off-by: Petr Mensik <pemensik@redhat.com>
---
 contrib/lease-tools/dhcp_release.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contrib/lease-tools/dhcp_release.c b/contrib/lease-tools/dhcp_release.c
index c866cd9..30e77c6 100644
--- a/contrib/lease-tools/dhcp_release.c
+++ b/contrib/lease-tools/dhcp_release.c
@@ -223,7 +223,11 @@ static struct in_addr find_interface(struct in_addr client, int fd, unsigned int
 	    ifr->ifr_addr.sa_family = AF_INET;
 	    if (ioctl(ifrfd, SIOCGIFADDR, ifr) != -1)
 	      return ((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr;
-	    exit(0);
+	    else
+	      {
+		fprintf(stderr, "error: local IPv4 address not found\n");
+		exit(1);
+	      }
           }
 	else if (h->nlmsg_type == RTM_NEWADDR)
           {
-- 
2.20.1