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

fusl/include/net/route.h

+#ifndef _NET_ROUTE_H
+#define _NET_ROUTE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+
+
+struct rtentry {
+        unsigned long int rt_pad1;
+        struct sockaddr rt_dst;
+        struct sockaddr rt_gateway;
+        struct sockaddr rt_genmask;
+        unsigned short int rt_flags;
+        short int rt_pad2;
+        unsigned long int rt_pad3;
+        unsigned char rt_tos;
+        unsigned char rt_class;
+        short int rt_pad4[sizeof(long)/2-1];
+        short int rt_metric;
+        char *rt_dev;
+        unsigned long int rt_mtu;
+        unsigned long int rt_window;
+        unsigned short int rt_irtt;
+};
+
+#define rt_mss  rt_mtu
+
+
+struct in6_rtmsg {
+        struct in6_addr rtmsg_dst;
+        struct in6_addr rtmsg_src;
+        struct in6_addr rtmsg_gateway;
+        uint32_t rtmsg_type;
+        uint16_t rtmsg_dst_len;
+        uint16_t rtmsg_src_len;
+        uint32_t rtmsg_metric;
+        unsigned long int rtmsg_info;
+        uint32_t rtmsg_flags;
+        int rtmsg_ifindex;
+};
+
+
+#define RTF_UP          0x0001
+#define RTF_GATEWAY     0x0002
+
+#define RTF_HOST        0x0004
+#define RTF_REINSTATE   0x0008
+#define RTF_DYNAMIC     0x0010
+#define RTF_MODIFIED    0x0020
+#define RTF_MTU         0x0040
+#define RTF_MSS         RTF_MTU
+#define RTF_WINDOW      0x0080
+#define RTF_IRTT        0x0100
+#define RTF_REJECT      0x0200
+#define RTF_STATIC      0x0400
+#define RTF_XRESOLVE    0x0800
+#define RTF_NOFORWARD   0x1000
+#define RTF_THROW       0x2000
+#define RTF_NOPMTUDISC  0x4000
+
+#define RTF_DEFAULT     0x00010000
+#define RTF_ALLONLINK   0x00020000
+#define RTF_ADDRCONF    0x00040000
+
+#define RTF_LINKRT      0x00100000
+#define RTF_NONEXTHOP   0x00200000
+
+#define RTF_CACHE       0x01000000
+#define RTF_FLOW        0x02000000
+#define RTF_POLICY      0x04000000
+
+#define RTCF_VALVE      0x00200000
+#define RTCF_MASQ       0x00400000
+#define RTCF_NAT        0x00800000
+#define RTCF_DOREDIRECT 0x01000000
+#define RTCF_LOG        0x02000000
+#define RTCF_DIRECTSRC  0x04000000
+
+#define RTF_LOCAL       0x80000000
+#define RTF_INTERFACE   0x40000000
+#define RTF_MULTICAST   0x20000000
+#define RTF_BROADCAST   0x10000000
+#define RTF_NAT         0x08000000
+
+#define RTF_ADDRCLASSMASK       0xF8000000
+#define RT_ADDRCLASS(flags)     ((uint32_t) flags >> 23)
+
+#define RT_TOS(tos)             ((tos) & IPTOS_TOS_MASK)
+
+#define RT_LOCALADDR(flags)     ((flags & RTF_ADDRCLASSMASK) \
+                                 == (RTF_LOCAL|RTF_INTERFACE))
+
+#define RT_CLASS_UNSPEC         0
+#define RT_CLASS_DEFAULT        253
+
+#define RT_CLASS_MAIN           254
+#define RT_CLASS_LOCAL          255
+#define RT_CLASS_MAX            255
+
+
+#define RTMSG_ACK               NLMSG_ACK
+#define RTMSG_OVERRUN           NLMSG_OVERRUN
+
+#define RTMSG_NEWDEVICE         0x11
+#define RTMSG_DELDEVICE         0x12
+#define RTMSG_NEWROUTE          0x21
+#define RTMSG_DELROUTE          0x22
+#define RTMSG_NEWRULE           0x31
+#define RTMSG_DELRULE           0x32
+#define RTMSG_CONTROL           0x40
+
+#define RTMSG_AR_FAILED         0x51
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif