-#if defined(HAVE_TCP_MD5_LINUX24) && defined(GNU_LINUX)
-/* Support for the old Linux 2.4 TCP-MD5 patch, taken from Hasso Tepper's
- * version of the Quagga patch (based on work by Rick Payne, and Bruce
- * Simpson)
- */
-#define TCP_MD5_AUTH 13
-#define TCP_MD5_AUTH_ADD 1
-#define TCP_MD5_AUTH_DEL 2
- struct tcp_rfc2385_cmd {
- uint8_t command; /* Command - Add/Delete */
- uint32_t address; /* IPV4 address associated */
- uint8_t keylen; /* MD5 Key len (do NOT assume 0 terminated
- ascii) */
- void *key; /* MD5 Key */
- } cmd;
- struct in_addr *addr = &su->sin.sin_addr;
-
- cmd.command = (password != NULL ? TCP_MD5_AUTH_ADD : TCP_MD5_AUTH_DEL);
- cmd.address = addr->s_addr;
- cmd.keylen = (password != NULL ? strlen(password) : 0);
- cmd.key = password;
-
- return setsockopt(sock, IPPROTO_TCP, TCP_MD5_AUTH, &cmd, sizeof cmd);
-
-#elif HAVE_DECL_TCP_MD5SIG