```java
pfctl -sr | grep -i dhcpv6 | grep 504|less
pass quick on ixl0.504 inet6 proto udp from fe80::/10 to fe80::/10 port = dhcpv6-client keep state label "allow access to DHCPv6 server"
pass quick on ixl0.504 inet6 proto udp from fe80::/10 to ff02::/16 port = dhcpv6-client keep state label "allow access to DHCPv6 server"
pass quick on ixl0.504 inet6 proto udp from fe80::/10 to ff02::/16 port = dhcpv6-server keep state label "allow access to DHCPv6 server"
pass quick on ixl0.504 inet6 proto udp from ff02::/16 to fe80::/10 port = dhcpv6-server keep state label "allow access to DHCPv6 server"
pass in quick on ixl0.504 inet6 proto udp from fe80::/10 to 2a00:fe0:32a:1001::2 port = dhcpv6-client keep state label "allow access to DHCPv6 server"
pass out quick on ixl0.504 inet6 proto udp from 2a00:fe0:32a:1001::2 port = dhcpv6-server to fe80::/10 keep state label "allow access to DHCPv6 server"
```
Here's also a snippet of the dhcp6 config:
```java
<dhcpdv6>
[...]
		<opt4>
			<range>
				<from>2xxx:ffff:32a:1001::1000</from>
				<to>2xxx:ffff:32a:1001:ffff:ffff:ffff:ffff</to>
			</range>
			<prefixrange>
				<from>2xxx:ffff:32a::</from>
				<to>2xxx:ffff:32a:ff0::</to>
				<prefixlength>60</prefixlength>
			</prefixrange>
			<defaultleasetime></defaultleasetime>
			<maxleasetime></maxleasetime>
			<netmask></netmask>
			<domain></domain>
			<domainsearchlist></domainsearchlist>
			<enable></enable>
			<ddnsdomain></ddnsdomain>
			<ddnsdomainprimary></ddnsdomainprimary>
			<ddnsdomainkeyname></ddnsdomainkeyname>
			<ddnsdomainkeyalgorithm>hmac-md5</ddnsdomainkeyalgorithm>
			<ddnsdomainkey></ddnsdomainkey>
			<ddnsclientupdates>allow</ddnsclientupdates>
			<tftp></tftp>
			<ldap></ldap>
			<bootfile_url></bootfile_url>
			<dhcpv6leaseinlocaltime></dhcpv6leaseinlocaltime>
			<numberoptions></numberoptions>
			<ramode>assist</ramode>
			<rapriority>high</rapriority>
			<rainterface>_vip5bb385ff08adf</rainterface>
			<ravalidlifetime></ravalidlifetime>
			<rapreferredlifetime></rapreferredlifetime>
			<raminrtradvinterval></raminrtradvinterval>
			<ramaxrtradvinterval></ramaxrtradvinterval>
			<raadvdefaultlifetime>20</raadvdefaultlifetime>
			<radomainsearchlist></radomainsearchlist>
			<dnsserver>2xxx:ffff:0:2::300</dnsserver>
			<dnsserver>2xxx:ffff:0:3::300</dnsserver>
			<radnsserver>2xxx:ffff:0:2::300</radnsserver>
			<radnsserver>2xxx:ffff:0:3::300</radnsserver>
		</opt4>
[...]
	</dhcpdv6>
```