1 #include <netlink/route/link/ip6tnl.h> 2 #include <netlink-private/netlink.h> 3 4 int 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
