mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
19 lines
565 B
Bash
19 lines
565 B
Bash
#!/bin/sh
|
|
|
|
[ "$(uci get network.globals.ula_prefix)" != "auto" ] && exit 0
|
|
# Sometimes results are empty, therefore try until it works...
|
|
local r1 r2 r3
|
|
while [ -z "$r1" -o -z "$r2" -o -z "$r3" ]; do
|
|
r1=$(printf "%02x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 256)))
|
|
r2=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536)))
|
|
r3=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536)))
|
|
done
|
|
|
|
uci -q batch <<-EOF >/dev/null
|
|
set network.globals.ula_prefix=fd$r1:$r2:$r3::/48
|
|
commit network
|
|
EOF
|
|
|
|
exit 0
|
|
|