diff options
Diffstat (limited to 'db845c/eth_mac_addr.sh')
| -rw-r--r-- | db845c/eth_mac_addr.sh | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/db845c/eth_mac_addr.sh b/db845c/eth_mac_addr.sh new file mode 100644 index 0000000..bdc1ba7 --- /dev/null +++ b/db845c/eth_mac_addr.sh @@ -0,0 +1,15 @@ +#! /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 |