#!/bin/sh

IFACE="$1"
EVENT="$2"

# On ne traite que enp8s0, événement up
[ "$IFACE" = "enp8s0" ] || exit 0
#[ "$EVENT" = "up" ] || exit 0
case "$EVENT" in
    up|dhcp6-change|connectivity-change) ;;
    *) exit 0 ;;
esac
# Attend quelques secondes que DHCPv6 ait posé l'IPv6
for i in $(seq 1 7200); do
    ULA=$(ip -6 addr show dev "$IFACE" | awk '/fec0:10:90:6::[0-9a-f]/ {print $2; exit}')
    if [ -n "$ULA" ]; then
        break
    fi
    sleep 1
done

# Si on a une ULA dans le /64, s'assurer de la route on-link
if [ -n "$ULA" ]; then
    ip -6 route show dev "$IFACE" | grep -q 'fec0:10:90:6::/64' \
        || ip -6 route add fec0:10:90:6::/64 dev "$IFACE"
fi

exit 0