Set errno appropriately if we're building without IPv6 support and an IPv6 socket...

diff --git a/src/lib/udpfromto.c b/src/lib/udpfromto.c
index 8973143..beda5cf 100644 (file)
--- a/src/lib/udpfromto.c
+++ b/src/lib/udpfromto.c
@@ -118,7 +118,7 @@ int udpfromto_init(int s)
                proto = SOL_IP;
                flag = IP_PKTINFO;
 #else
-#ifdef IP_RECVDSTADDR
+#  ifdef IP_RECVDSTADDR
 
                /*
                 *      Set the IP_RECVDSTADDR option (BSD).  Note:
@@ -126,9 +126,9 @@ int udpfromto_init(int s)
                 */
                proto = IPPROTO_IP;
                flag = IP_RECVDSTADDR;
-#else
+#  else
                return -1;
-#endif
+#  endif
 #endif
 
 #ifdef AF_INET6
@@ -144,6 +144,9 @@ int udpfromto_init(int s)
                 */
                flag = FR_IPV6_RECVPKTINFO;
 #else
+#  ifdef EPROTONOSUPPORT
+               errno = EPROTONOSUPPORT;
+#  endif
                return -1;
 #  endif
 #endif