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

fusl/include/netinet/ip6.h

Index: fusl/include/netinet/ip6.h
diff --git a/fusl/include/netinet/ip6.h b/fusl/include/netinet/ip6.h
new file mode 100644
index 0000000000000000000000000000000000000000..a4347a53fd7dd364a6c2c3b71ee053128ead1412
--- /dev/null
+++ b/fusl/include/netinet/ip6.h
@@ -0,0 +1,142 @@
+#ifndef _NETINET_IP6_H
+#define _NETINET_IP6_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <netinet/in.h>
+#include <endian.h>
+
+struct ip6_hdr {
+	union {
+		struct ip6_hdrctl {
+			uint32_t ip6_un1_flow;
+			uint16_t ip6_un1_plen;
+			uint8_t  ip6_un1_nxt;
+			uint8_t  ip6_un1_hlim;
+		} ip6_un1;
+		uint8_t ip6_un2_vfc;
+	} ip6_ctlun;
+	struct in6_addr ip6_src;
+	struct in6_addr ip6_dst;
+};
+
+#define ip6_vfc   ip6_ctlun.ip6_un2_vfc
+#define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
+#define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
+#define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
+#define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
+#define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
+
+struct ip6_ext {
+	uint8_t  ip6e_nxt;
+	uint8_t  ip6e_len;
+};
+
+struct ip6_hbh {
+	uint8_t  ip6h_nxt;
+	uint8_t  ip6h_len;
+};
+
+struct ip6_dest {
+	uint8_t  ip6d_nxt;
+	uint8_t  ip6d_len;
+};
+
+struct ip6_rthdr {
+	uint8_t  ip6r_nxt;
+	uint8_t  ip6r_len;
+	uint8_t  ip6r_type;
+	uint8_t  ip6r_segleft;
+};
+
+struct ip6_rthdr0 {
+	uint8_t  ip6r0_nxt;
+	uint8_t  ip6r0_len;
+	uint8_t  ip6r0_type;
+	uint8_t  ip6r0_segleft;
+	uint8_t  ip6r0_reserved;
+	uint8_t  ip6r0_slmap[3];
+	struct in6_addr ip6r0_addr[];
+};
+
+struct ip6_frag {
+	uint8_t   ip6f_nxt;
+	uint8_t   ip6f_reserved;
+	uint16_t  ip6f_offlg;
+	uint32_t  ip6f_ident;
+};
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define IP6F_OFF_MASK       0xfff8
+#define IP6F_RESERVED_MASK  0x0006
+#define IP6F_MORE_FRAG      0x0001
+#else
+#define IP6F_OFF_MASK       0xf8ff
+#define IP6F_RESERVED_MASK  0x0600
+#define IP6F_MORE_FRAG      0x0100
+#endif
+
+struct ip6_opt {
+	uint8_t  ip6o_type;
+	uint8_t  ip6o_len;
+};
+
+#define IP6OPT_TYPE(o)		((o) & 0xc0)
+#define IP6OPT_TYPE_SKIP	0x00
+#define IP6OPT_TYPE_DISCARD	0x40
+#define IP6OPT_TYPE_FORCEICMP	0x80
+#define IP6OPT_TYPE_ICMP	0xc0
+#define IP6OPT_TYPE_MUTABLE	0x20
+
+#define IP6OPT_PAD1	0
+#define IP6OPT_PADN	1
+
+#define IP6OPT_JUMBO		0xc2
+#define IP6OPT_NSAP_ADDR	0xc3
+#define IP6OPT_TUNNEL_LIMIT	0x04
+#define IP6OPT_ROUTER_ALERT	0x05
+
+struct ip6_opt_jumbo {
+	uint8_t  ip6oj_type;
+	uint8_t  ip6oj_len;
+	uint8_t  ip6oj_jumbo_len[4];
+};
+#define IP6OPT_JUMBO_LEN	6
+
+struct ip6_opt_nsap {
+	uint8_t  ip6on_type;
+	uint8_t  ip6on_len;
+	uint8_t  ip6on_src_nsap_len;
+	uint8_t  ip6on_dst_nsap_len;
+};
+
+struct ip6_opt_tunnel {
+	uint8_t  ip6ot_type;
+	uint8_t  ip6ot_len;
+	uint8_t  ip6ot_encap_limit;
+};
+
+struct ip6_opt_router {
+	uint8_t  ip6or_type;
+	uint8_t  ip6or_len;
+	uint8_t  ip6or_value[2];
+};
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0001
+#define IP6_ALERT_AN	0x0002
+#else
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0100
+#define IP6_ALERT_AN	0x0200
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif