Roadmap: to support IPV6.

Author: logwang

doc/F-Stack_Roadmap.md

@@ -3,9 +3,10 @@
 This list are major known features, and obviously neither complete nor guaranteed.
 
 1. Zerocopy when send packet.
-2. Interrupt mode support.
-3. Run as a network daemon.
-4. SPDK supportted.
-5. Python/PHP/Go API supportted.
-6. Encapsulate Cyptodev API（Intel QAT）.
+2. Ipv6 support.
+3. Interrupt mode support.
+4. Run as a network daemon.
+5. SPDK supportted.
+6. Python/PHP/Go API supportted.
+7. Encapsulate Cyptodev API（Intel QAT）.