| #! /system/bin/sh |
| # Set eth0 mac address. |
| # |
| # Get the unique board serial number from /proc/cmdline, |
| # prepend '0's to the serial number to fill 5 LSBs of the |
| # MAC address and prepend "02" as MSB to prepare a 6 byte |
| # locally administered unicast MAC address. |
| # Format the output in xx:xx:xx:xx:xx:xx format for the |
| # "ip" set address command to work. |
| |
| SERIALNO=`cat /proc/cmdline | grep -o serialno.* | cut -f2 -d'=' | awk '{printf("02%010s\n", $1)}' | sed 's/\(..\)/\1:/g' | sed '$s/:$//'` |
| |
| /system/bin/ip link set dev eth0 down |
| /system/bin/ip link set dev eth0 address "${SERIALNO}" |
| /system/bin/ip link set dev eth0 up |