StdLib/EfiSocketLib/ReleaseNotes.txt

   1 The following issues exist with the EFI Socket Library:
   2
   3 *  Don't run socket applications or the socket driver for a long time - The IPv4Config
   4    and DHCP protocols are not properly running the renew and lease expiration timers.
   5    When the DHCP lease expires it is possible for a duplicate IP address to exist on
   6    the network.  HSD 206136
   7
   8 *  Network adapters must be initialized prior to running the socket application - Static
   9    and dynamic IP address need to be properly assigned to the network adapters on the
  10    system.  Note that sockets does not assign the IP addresses since it does not
  11    understand how the system is connected to the network!
  12
  13 *  The default device must contain the Efi\etc directory populated with files containing
  14    the proper network configuration - A template set of files is in StdLib\Efi\etc.  Note
  15    that the resolv.conf file contains the set of DNS servers.
  16
  17 *  Since DHCP is not running when the sockets application is running, the last negotiated
  18    packet is no longer available.  As a result, any of the options that DHCP did negotiate
  19    are no longer available for sockets such as the list of DNS servers.
  20
  21 *  DHCP does not request the domain name and domain name server (DNS) addresses.  This
  22    requires that sockets use configuration files in Efi\etc!
  23
  24 *  TCPv4 transfer rate is slow (< 10 Mbits/sec) - This is an unidentified issue.
  25
  26 *  Tcp4Dxe transmits more urgent data than is sent through sockets when normal data is
  27    queued for transmission before the urgent data.  HSD 206365
  28
  29 *  Raw socket applications are not able to pass the IP header as part of their
  30    payload by using the IP option IP_HDRINCL.  This is because the UEFI IPv4 driver
  31    (Ip4Dxe) does not support RawData. HSD 206136
  32
  33 *  Only version 4 of the UEFI network stack is supported
  34