1 #include <netlink/route/link/ipip.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 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_ipip_alloc(); 31 if(!link) { 32 nl_perror(err, "Unable to allocate link"); 33 return -1; 34 } 35 36 rtnl_link_set_name(link, "ipip-tun"); 37 rtnl_link_ipip_set_link(link, if_index); 38 39 inet_pton(AF_INET, "192.168.254.12", &addr.s_addr); 40 rtnl_link_ipip_set_local(link, addr.s_addr); 41 42 inet_pton(AF_INET, "192.168.254.13", &addr.s_addr); 43 rtnl_link_ipip_set_remote(link, addr.s_addr); 44 45 rtnl_link_ipip_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
