Fix mygethostbyaddr(), struct in is not a NULL terminated string.

i.e. len has to be either sizeof(in.s_addr) or INADDRSZ.

1 files changed, 1 insertions, 1 deletions

diff --git a/mdk-stage1/dns.c b/mdk-stage1/dns.c
index c0fc655d2..266864d37 100644
--- a/mdk-stage1/dns.c
+++ b/mdk-stage1/dns.c
@@ -67,7 +67,7 @@ char * mygethostbyaddr(char * ipnum)
 	struct hostent * host;
 	if (!inet_aton(ipnum, &in))
 		return NULL;
-	host = gethostbyaddr(&in, strlen((void *) &in), AF_INET);
+	host = gethostbyaddr(&in.s_addr, sizeof(in.s_addr) /* INADDRSZ */, AF_INET);
 	if (host && host->h_name)
 		return host->h_name;
 	return NULL;