112         int sock = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);  in ipv4_loopback()  local
113         if (sock < 0) {  in ipv4_loopback()
121         if (connect(sock, (sockaddr*) &server, sizeof(server))) {  in ipv4_loopback()
123             close(sock);  in ipv4_loopback()
139             close(sock);  in ipv4_loopback()
144         close(sock);  in ipv4_loopback()
169         int sock = socket(AF_INET6, SOCK_STREAM | SOCK_CLOEXEC, 0);  in ipv6_loopback()  local
170         if (sock < 0) {  in ipv6_loopback()
178         if (connect(sock, (sockaddr*) &server, sizeof(server))) {  in ipv6_loopback()
180             close(sock);  in ipv6_loopback()
196             close(sock);  in ipv6_loopback()
201         close(sock);  in ipv6_loopback()