2. Integrate IPsec functionality to IP4 driver.
3. Move IP_VERSION_4/IP_VERSION_6 definition from IpIoLib to NetLib.
4. Move the Ip6/Udp6 protocol declaration from driver INF to Library INF (DxeIpIoLib and DxeUdpIoLib) for better readability.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9413 6f19259b-4bc3-4df7-8a09-765794883524
2. Update Dhcp4 and Mtftp4 driver to adopt the combined UdpIo.
3. Clean up coding style problems in combined IpIoLib/NetLib. Update Tcp4 and Udp4 to adopt the changes.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9382 6f19259b-4bc3-4df7-8a09-765794883524