Earlier, I could read MAC address with awk tools in Windows or Windows PE 4.0, but now it don't support Windows PE 4.0 64-bit. I want to get this result "set mac=A4BADB9D1E8E" with python 2.6, who could help to me.

As follows:

ipconfig -all|sed -nrf getmac.sed | sed -e "s/-//g" > D:\LOG\WINMAC.BAT
-----------------------------------------------------------------------

getmac.sed:
/Realtek/ {
n;
s/.*: ([-0-9A-F]+)/set winmac=\1/p;
}

and "ipconfig -all" command log as bellows:

ipconfig -all >mac.log
----------------------

Ethernet adapter Ethernet:
--------------------------

Media State . . . . . . . . . . . : Media disconnected
------------------------------------------------------

Connection-specific DNS Suffix . : WKSCN.WISTRON
------------------------------------------------

Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
---------------------------------------------------------------------

Physical Address. . . . . . . . . : 24-B6-FD-1F-41-E7
-----------------------------------------------------

DHCP Enabled. . . . . . . . . . . : Yes
---------------------------------------

Autoconfiguration Enabled . . . . : Yes
---------------------------------------