vrrpd: gracefully shutdown on SIGTERM / SIGINT

Handle kill signals by gracefully destroying all of our VRRP instances.
If any of them are in Master state, send an advert with 0 priority to
notify Backup routers we are going down.

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/vrrpd/vrrp_main.c b/vrrpd/vrrp_main.c
index d6a43be8e8..98b907d013 100644
--- a/vrrpd/vrrp_main.c
+++ b/vrrpd/vrrp_main.c
@@ -69,10 +69,12 @@ static void sighup(void)
 }
 
 /* SIGINT / SIGTERM handler. */
-static void sigint(void)
+static void __attribute__((noreturn)) sigint(void)
 {
 	zlog_notice("Terminating on signal");
 
+	vrrp_fini();
+
 	exit(0);
 }