File: //usr/lib/initramfs-tools/etc/dhcp/dhclient-enter-hooks.d/config
#!/bin/sh
case "$reason" in
BOUND6)
echo "DEVICE6=$interface" > /run/net6-$interface.conf
echo "IPV6PROTO=dhcp6" >> /run/net6-$interface.conf
echo "IPV6ADDR=$new_ip6_address" >> /run/net6-$interface.conf
echo "IPV6NETMASK=$new_ip6_prefixlen" >> /run/net6-$interface.conf
echo "IPV6DNS0=$new_dhcp6_name_servers" >> /run/net6-$interface.conf
if [ -n "$new_dhcp6_domain_search" ]; then
echo "IPV6DOMAINSEARCH=$new_dhcp6_domain_search" >> /run/net6-$interface.conf
fi
;;
esac