+/** \r
+ @par Protocol Description:\r
+ Protocol that is invoked when the PXE Base Code Protocol is about \r
+ to transmit, has received, or is waiting to receive a packet.\r
+\r
+ @param Revision\r
+ The revision of the EFI_PXE_BASE_CODE_PROTOCOL. All future revisions must \r
+ be backwards compatible. If a future version is not backwards compatible \r
+ it is not the same GUID.\r
+\r
+ @param Callback\r
+ Callback routine used by the PXE Base Code Dhcp(), Discover(), Mtftp(), \r
+ UdpWrite(), and Arp() functions.\r
+\r
+**/\r