prevent the use of AI_ADDRCONFIG

perl's IO::Socket::IP passes AI_ADDRCONFIG if no GetAddrInfoFlags are passed,
which is often useful but also causes it to error when explicitly trying to
bind to 127.0.0.1 when there are no _other_ IPv4 addresses present.

src/PVE/Daemon.pm

@@ -807,6 +807,7 @@ sub create_reusable_socket {
 	    Listen => SOMAXCONN,
 	    Family => $family,
 	    Proto  => 'tcp',
+	    GetAddrInfoFlags => 0,
 	    ReuseAddr => 1) ||
 	    die "unable to create socket - $@\n";
 

src/PVE/Tools.pm

@@ -696,7 +696,8 @@ sub next_unused_port {
 					   LocalPort => $p,
 					   ReuseAddr => 1,
 					   Family    => $family,
-					   Proto     => 0);
+					   Proto     => 0,
+					   GetAddrInfoFlags => 0);
 
 	    if ($sock) {
 		close($sock);