dev: device_set_flags: also dump error

We currently don't dump the actual error message whereas we should
allow the user to identify a problem more easily.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/dev.c b/dev.c
index 20dfe17..cf8d643 100644
--- a/dev.c
+++ b/dev.c
@@ -175,7 +175,7 @@ void device_set_flags(const char *ifname, const short flags)
 
 	ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
 	if (unlikely(ret < 0))
-		panic("Cannot set NIC flags!\n");
+		panic("Cannot set NIC flags (%s)!\n", strerror(errno));
 
 	close(sock);
 }