diff options
| -rwxr-xr-x | scripts/init/vyos-router | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/scripts/init/vyos-router b/scripts/init/vyos-router index 316321c..bc0517c 100755 --- a/scripts/init/vyos-router +++ b/scripts/init/vyos-router @@ -226,6 +226,34 @@ security_reset () find /etc/swanctl -type f | xargs rm -f } +# XXX: T3885 - generate persistend DHCPv6 DUID (Type4 - UUID based) +gen_duid () +{ + DUID_FILE="/var/lib/dhcpv6/dhcp6c_duid" + UUID_FILE="/sys/class/dmi/id/product_uuid" + if [ ! -f ${UUID_FILE} ]; then + return 1 + fi + + # DUID is based on the BIOS/EFI UUID. We omit additional - characters + UUID=$(cat ${UUID_FILE} | tr -d -) + # Add DUID type4 (UUID) information + DUID_TYPE="0004" + + # The length-information (as per RFC6355 UUID is 128 bits long) is in big-endian + # format - beware when porting to ARM64. The length field consists out of the + # UUID (128 bit + 16 bits DUID type) resulting in hex 12. + DUID_LEN="0012" + if [ "$(echo -n I | od -to2 | head -n1 | cut -f2 -d" " | cut -c6 )" -eq 1 ]; then + # true on little-endian (x86) systems + DUID_LEN="1200" + fi + + for i in $(echo -n ${DUID_LEN}${DUID_TYPE}${UUID} | sed 's/../& /g'); do + echo -ne "\x$i" + done > ${DUID_FILE} +} + start () { # some legacy directories migrated over from old rl-system.init @@ -249,6 +277,9 @@ start () # Clear out Debian APT source config file empty /etc/apt/sources.list + # Generate DHCPv6 DUID + gen_duid || log_failure_msg "could not generate DUID" + # Fixup for FRR # In 5.1 master, zebra thinks existence of /var/run/netns is # a requirement for netns support |