proto = SOL_IP;
flag = IP_PKTINFO;
#else
-#ifdef IP_RECVDSTADDR
+# ifdef IP_RECVDSTADDR
/*
* Set the IP_RECVDSTADDR option (BSD). Note:
*/
proto = IPPROTO_IP;
flag = IP_RECVDSTADDR;
-#else
+# else
return -1;
-#endif
+# endif
#endif
#ifdef AF_INET6
*/
flag = FR_IPV6_RECVPKTINFO;
#else
+# ifdef EPROTONOSUPPORT
+ errno = EPROTONOSUPPORT;
+# endif
return -1;
# endif
#endif