diff options
Diffstat (limited to 'package/base-files/files/etc/uci-defaults/generate-ula')
| -rw-r--r-- | package/base-files/files/etc/uci-defaults/generate-ula | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/package/base-files/files/etc/uci-defaults/generate-ula b/package/base-files/files/etc/uci-defaults/generate-ula new file mode 100644 index 0000000000..f3e493145f --- /dev/null +++ b/package/base-files/files/etc/uci-defaults/generate-ula @@ -0,0 +1,18 @@ +#!/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 + |