1#include <netlink/route/link/ip6tnl.h>
2#include <netlink-private/netlink.h>
3
4int main(int argc, char *argv[])
5{
6	struct nl_cache *link_cache;
7	struct rtnl_link *link;
8        struct in6_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, "ens33");
25	if (!if_index) {
26		fprintf(stderr, "Unable to lookup ens33");
27		return -1;
28	}
29
30	link = rtnl_link_ip6_tnl_alloc();
31	if(!link) {
32		nl_perror(err, "Unable to allocate link");
33		return -1;
34
35	}
36	rtnl_link_set_name(link, "ip6tnl-tun");
37	rtnl_link_ip6_tnl_set_link(link, if_index);
38
39	inet_pton(AF_INET6, "2607:f0d0:1002:51::4", &addr);
40	rtnl_link_ip6_tnl_set_local(link, &addr);
41
42	inet_pton(AF_INET6, "2607:f0d0:1002:52::5", &addr);
43	rtnl_link_ip6_tnl_set_remote(link, &addr);
44
45	err = rtnl_link_add(sk, link, NLM_F_CREATE);
46	if (err < 0) {
47		nl_perror(err, "Unable to add link");
48		return err;
49	}
50
51	rtnl_link_put(link);
52	nl_close(sk);
53
54	return 0;
55}
56