menu "Net"
#config NET_LWIP
#   bool "Enable Lwip"
#   default y

#   help
#     extend kernel include runstop, dynload, scatter and cppsupport.
#     It can support all or some.

config NET_LWIP_SACK
    bool "Enable Lwipsack"
    default y

    help
      Answer Y to enable LiteOS support lwip.

choice
    depends on NET_LWIP_SACK
    prompt "Lwipsack"
    default y
    help
      Enable Lwipsack for 2.x

config NET_LWIP_SACK_2_1
    bool "Enable Lwipsack (2.1)"
    depends on NET_LWIP_SACK

endchoice
endmenu