Add a "fork" of musl as //fusl.

fusl/src/network/lookup.h

+#ifndef LOOKUP_H
+#define LOOKUP_H
+
+#include <stdint.h>
+
+struct address {
+        int family;
+        unsigned scopeid;
+        uint8_t addr[16];
+        int sortkey;
+};
+
+struct service {
+        uint16_t port;
+        unsigned char proto, socktype;
+};
+
+/* The limit of 48 results is a non-sharp bound on the number of addresses
+ * that can fit in one 512-byte DNS packet full of v4 results and a second
+ * packet full of v6 results. Due to headers, the actual limit is lower. */
+#define MAXADDRS 48
+#define MAXSERVS 2
+
+int __lookup_serv(struct service buf[static MAXSERVS], const char *name, int proto, int socktype, int flags);
+int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, int flags);
+int __lookup_ipliteral(struct address buf[static 1], const char *name, int family);
+
+#endif