better handling of LHOST vs 0.0.0.0; fixes #262 again

git-svn-id: file:///home/svn/framework3/trunk@5971 4d416f70-5f16-0410-b530-b9f4589650da

lib/msf/core/handler/reverse_tcp.rb

@@ -57,12 +57,14 @@ module ReverseTcp
 			raise 'tcp connectback can not be used with proxies'
 		end
 
+		ex = false
 		# Switch to IPv6 ANY address if the LHOST is also IPv6
 		addr = Rex::Socket.resolv_nbo(datastore['LHOST'])
-		lsnr = (addr.length == 4) ? "0.0.0.0" : "::0" 
-
+		[ Rex::Socket.addr_ntoa(addr), "0.0.0.0" ].each { |ip|
+			begin 
+				print_status("Handler binding to LHOST #{ip}")
 				self.listener_sock = Rex::Socket::TcpServer.create(
-			'LocalHost' => lsnr,
+					'LocalHost' => ip,
 					'LocalPort' => datastore['LPORT'].to_i,
 					'Comm'      => comm,
 					'Context'   =>
@@ -71,6 +73,14 @@ module ReverseTcp
 							'MsfPayload' => self,
 							'MsfExploit' => assoc_exploit
 						})
+				ex = false
+				break
+			rescue
+				ex = $!
+				print_error("Bind failed on #{ip}")
+			end
+		}
+		raise ex if (ex) 
 	end
 
 	#