https://bugs.gentoo.org/956707
--- a/net/dns_resolvconfip.c
+++ b/net/dns_resolvconfip.c
@@ -71,7 +71,7 @@ static int init(ipv4addr ip[DNS_MAX_IPS])
     memcpy(ip,"\177\0\0\1",4);
     iplen = 4;
   }
-  memset(ip + iplen,0,64 - iplen);
+  memset(&ip[iplen],0,sizeof(ipv4addr));
   return 0;
 }