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base-files: correct global DHCP DUID generation

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The old command generates an often incorrect variable length UUID
instead of a fixed 16-octet hex string.

Ref: https://datatracker.ietf.org/doc/html/rfc8415#section-11.5

Signed-off-by: Alice H. <alice.hall0451+github@gmail.com>
This commit is contained in:
Alice H. 2025-11-08 04:39:42 +00:00 committed by Robert Marko
parent 412bc7e1d8
commit 010575c617
1 changed files with 1 additions and 1 deletions
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2
package/base-files/files/etc/uci-defaults/14_network-generate-clientid
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@ -2,7 +2,7 @@
uci -q batch <<-EOF >/dev/null
# DUID-UUID - RFC6355
set network.globals.dhcp_default_duid="$(hexdump -vn 16 -e '"0004" 2/2 "%x"' /dev/urandom)"
set network.globals.dhcp_default_duid="$(printf '%s%s' '0004' $(cat /proc/sys/kernel/random/uuid | sed -e 's/-//g'))"
commit network
EOF