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-rw-r--r--networking/ifupdown.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 534c9f0c7..5481134e5 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -138,6 +138,7 @@
//usage: "\n -v Print out what would happen before doing it"
//usage: "\n -f Force deconfiguration"
+#include <net/if.h>
#include "libbb.h"
#include "common_bufsiz.h"
/* After libbb.h, since it needs sys/types.h on some systems */
@@ -503,6 +504,8 @@ static int FAST_FUNC static_up6(struct interface_defn_t *ifd, execfn *exec)
static int FAST_FUNC static_down6(struct interface_defn_t *ifd, execfn *exec)
{
+ if (!if_nametoindex(ifd->iface))
+ return 1; /* already gone */
# if ENABLE_FEATURE_IFUPDOWN_IP
return execute("ip link set %iface% down", ifd, exec);
# else
@@ -598,6 +601,9 @@ static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec)
{
int result;
+
+ if (!if_nametoindex(ifd->iface))
+ return 2; /* already gone */
# if ENABLE_FEATURE_IFUPDOWN_IP
/* Optional "label LBL" is necessary if interface is an alias (eth0:0),
* otherwise "ip addr flush dev eth0:0" flushes all addresses on eth0.