1 #include <netlink/route/link/sit.h>
2 #include <netlink-private/netlink.h>
3
main(int argc,char * argv[])4 int main(int argc, char *argv[])
5 {
6 struct nl_cache *link_cache;
7 struct rtnl_link *link;
8 struct in_addr addr;
9 struct nl_sock *sk;
10 int err, if_index;
11
12 sk = nl_socket_alloc();
13 if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
14 nl_perror(err, "Unable to connect socket");
15 return err;
16 }
17
18 err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache);
19 if ( err < 0) {
20 nl_perror(err, "Unable to allocate cache");
21 return err;
22 }
23
24 if_index = rtnl_link_name2i(link_cache, "eno16777736");
25 if (!if_index) {
26 fprintf(stderr, "Unable to lookup eno16777736");
27 return -1;
28 }
29
30 link = rtnl_link_sit_alloc();
31 if(!link) {
32 nl_perror(err, "Unable to allocate link");
33 return -1;
34
35 }
36 rtnl_link_set_name(link, "sit-tun");
37 rtnl_link_sit_set_link(link, if_index);
38
39 inet_pton(AF_INET, "192.168.254.12", &addr.s_addr);
40 rtnl_link_sit_set_local(link, addr.s_addr);
41
42 inet_pton(AF_INET, "192.168.254.13", &addr.s_addr);
43 rtnl_link_sit_set_remote(link, addr.s_addr);
44
45 rtnl_link_sit_set_ttl(link, 64);
46 err = rtnl_link_add(sk, link, NLM_F_CREATE);
47 if (err < 0) {
48 nl_perror(err, "Unable to add link");
49 return err;
50 }
51
52 rtnl_link_put(link);
53 nl_close(sk);
54
55 return 0;
56 }
57