so to sum it all up this is what i have done so far:
started from scratch with openwrt on my nanopi R4S.
nothing changed still no ipv6 on Vlan3.
on another topic @slh advised me to take a good look at:
Make sure to use ip6hint and ip6assign and set up odhcpd for your additional interfaces.
ip6assighn is related to my prefix i presume.
odhcpd i have no cleu what to do with this.
ip6hint no idea what the correct settings are.
i now have the following setup:
network:
config interface 'loopback'
option device 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd97:781c:cad1::/48'
option packet_steering '1'
config device
option name 'br-lan'
option type 'bridge'
list ports 'eth1'
config device
option name 'eth1'
option macaddr 'da:96:6e:0e:99:43'
config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '64'
option ip6hint '0'
config device
option name 'eth0'
option macaddr 'da:96:6e:0e:99:42'
config interface 'wan'
option device 'eth0'
option proto 'dhcp'
config interface 'wan6'
option device 'eth0'
option proto 'dhcpv6'
config device
option type '8021q'
option ifname 'eth1'
option vid '2'
option name 'eth1.2'
config device
option type '8021q'
option ifname 'eth1'
option vid '3'
option name 'eth1.3'
config interface 'VLAN2'
option proto 'static'
option device 'eth1.2'
option ipaddr '192.168.2.1'
option netmask '255.255.255.0'
option ip6assign '64'
option ip6hint '0'
config interface 'VLAN3'
option proto 'static'
option device 'eth1.3'
option ipaddr '192.168.3.1'
option netmask '255.255.255.0'
option ip6assign '64'
option ip6hint '0'
dhcp:
onfig dnsmasq
option domainneeded '1'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option domain 'lan'
option expandhosts '1'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
option localservice '1'
option ednspacket_max '1232'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '12h'
option dhcpv4 'server'
option dhcpv6 'server'
option ra 'server'
list ra_flags 'managed-config'
list ra_flags 'other-config'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'
option loglevel '4'
config dhcp 'VLAN2'
option interface 'VLAN2'
option start '100'
option limit '150'
option ra 'server'
option dhcpv6 'server'
option leasetime '12m'
config dhcp 'VLAN3'
option interface 'VLAN3'
option start '100'
option limit '150'
option ra 'server'
option dhcpv6 'server'
option leasetime '12m'
firewal:
config defaults
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'REJECT'
option synflood_protect '1'
config zone
option name 'lan'
list network 'lan'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
config zone
option name 'wan'
list network 'wan'
list network 'wan6'
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option masq '1'
option mtu_fix '1'
config forwarding
option src 'lan'
option dest 'wan'
config rule
option name 'Allow-DHCP-Renew'
option src 'wan'
option proto 'udp'
option dest_port '68'
option target 'ACCEPT'
option family 'ipv4'
config rule
option name 'Allow-Ping'
option src 'wan'
option proto 'icmp'
option icmp_type 'echo-request'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-IGMP'
option src 'wan'
option proto 'igmp'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-DHCPv6'
option src 'wan'
option proto 'udp'
option dest_port '546'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-MLD'
option src 'wan'
option proto 'icmp'
option src_ip 'fe80::/10'
list icmp_type '130/0'
list icmp_type '131/0'
list icmp_type '132/0'
list icmp_type '143/0'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Input'
option src 'wan'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
list icmp_type 'router-solicitation'
list icmp_type 'neighbour-solicitation'
list icmp_type 'router-advertisement'
list icmp_type 'neighbour-advertisement'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Forward'
option src 'wan'
option dest '*'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-IPSec-ESP'
option src 'wan'
option dest 'lan'
option proto 'esp'
option target 'ACCEPT'
config rule
option name 'Allow-ISAKMP'
option src 'wan'
option dest 'lan'
option dest_port '500'
option proto 'udp'
option target 'ACCEPT'
config zone
option name 'VLAN2'
option input 'ACCEPT'
option output 'ACCEPT'
list network 'VLAN2'
list network 'WG0'
option forward 'ACCEPT'
config zone
option name 'VLAN3'
option input 'ACCEPT'
option output 'ACCEPT'
list network 'VLAN3'
option forward 'ACCEPT'
config rule
list proto 'udp'
option src '*'
option src_port '5353'
list dest_ip '224.0.0.251'
option dest_port '5353'
option target 'ACCEPT'
option name 'allow mDNS'
config redirect
option dest 'lan'
option target 'DNAT'
list proto 'udp'
option src 'wan'
option src_dport '51820'
option dest_port '51820'
option name 'port 51820 - wireguard'
option dest_ip '192.168.2.1'
config forwarding
option src 'VLAN2'
option dest 'wan'
config forwarding
option src 'VLAN3'
option dest 'wan'
config forwarding
option src 'VLAN2'
option dest 'lan'
config forwarding
option src 'lan'
option dest 'VLAN2'
ifstatus wan6:
root@OpenWrt:~# ifstatus wan6
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 2011,
"l3_device": "eth0",
"proto": "dhcpv6",
"device": "eth0",
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
],
"ipv6-address": [
{
"address": "2001:1c06:1c00:0:e9c5:aba4:6208:8e05",
"mask": 128,
"preferred": 604588,
"valid": 1209388
}
],
"ipv6-prefix": [
{
"address": "2001:1c06:1c1d:cb00::",
"mask": 56,
"preferred": 604588,
"valid": 1209388,
"class": "wan6",
"assigned": {
"VLAN2": {
"address": "2001:1c06:1c1d:cb00::",
"mask": 64
},
"VLAN3": {
"address": "2001:1c06:1c1d:cb01::",
"mask": 64
},
"lan": {
"address": "2001:1c06:1c1d:cb02::",
"mask": 64
}
}
}
],
"ipv6-prefix-assignment": [
],
"route": [
{
"target": "::",
"mask": 0,
"nexthop": "fe80::201:5cff:feaa:6846",
"metric": 512,
"valid": 1798,
"source": "2001:1c06:1c1d:cb00::/56"
},
{
"target": "::",
"mask": 0,
"nexthop": "fe80::201:5cff:feaa:6846",
"metric": 512,
"valid": 1798,
"source": "2001:1c06:1c00:0:e9c5:aba4:6208:8e05/128"
}
],
"dns-server": [
"2001:b88:1002::10",
"2001:b88:1202::10",
"2001:730:3e42:1000::53"
],
"dns-search": [
],
"neighbors": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
]
},
"data": {
"passthru": "0017003020010b8810020000000000000000001020010b88120 200000000000000000010200107303e4210000000000000000053"
}
}
root@OpenWrt:~#
Hope somebody with greater it skills then me can help me 
