ipv6only
duid
persistent
waitip
option rapid_commit
require dhcp_server_identifier
 # If you run your own domain resolver, don't accept certain options
nooption domain_name_servers, domain_name, domain_search, host_name
 # disable running any hooks; not typically required for simple DHCPv6-PD setup
script /usr/bin/true
 # Disable dhcpcd's own router solicitation support; allow slaacd
 # to do this instead by setting "inet6 autoconf" in hostname.em0
noipv6rs
 # List interfaces explicitly so that dhcpcd doesn't touch others
allowinterfaces em0 em1 em2 vlan4 vlan6 vlan10 vlan20 vlan30
interface em0
        # address from the /64
        ia_na 1
        # request prefix delegation for downstream interfaces.
        ia_pd 2 em1/1 em2/2 vlan4/3 vlan6/4 vlan10/5 vlan20/6 vlan30/7
