Does IPv6 support 802.1q. Can I request a tagging packet to my IPv6 server?

[Arutkavi]

I have a modem with IPv4 and IPv6 configurations. And in my Cisco BRAS iOS server have a IPv6 configurations.

My topoly is BRAS server(DHCPv4 adn DHCPv6 server) --> L2 cisco switch --> Modem

I am configuring the modem like tagging WAN and I cannot get IPv6 from DHCPv6 server but I can get the IPv4 IP from DHCPv4 server. I have configured my port in switch as Tagged/Trunk. But I can't get IP from DHCPv6 server in tagging config. 

Here is my DHCP pool config and Interface config in my server.

ipv6 unicast-routing
ipv6 source-route
ipv6 cef
ipv6 dhcp pool STATEFUL
address prefix 2001:1111:1111:1234::/64
dns-server 2001:4860:4860::8888
domain-name PRODAPT.LOCAL
!
ipv6 dhcp pool dhcpv6
prefix-delegation pool ipv6_pool1 lifetime 7200 300
address prefix 2001:470:19:417::/64
dns-server 2001:4860:4860::8888
dns-server 2001:4860:4860::8844

interface GigabitEthernet0/2.20
description VLAN 20 PPPPoE/DHCP
encapsulation dot1Q 20
ip dhcp relay information trusted
ip address 10.102.2.1 255.255.255.0 secondary
ip address 10.102.1.1 255.255.255.0
no ip redirects
no ip proxy-arp
ip accounting output-packets
ip accounting access-violations
ip nat inside
no ip virtual-reassembly
no ip mroute-cache
ipv6 address 2001:470:19:417::1/64
ipv6 enable
ipv6 dhcp server dhcpv6
pppoe enable group global
no cdp enable
arp timeout 86400

[Leo Laohoo · Accepted solution]

802.1q doesn't "care" about IPv4 or IPv6 because 802.1q is Layer 2.

[Arutkavi]

Yup, I agree found the issue now. Thanks for the response

[abderrazak]

Hello @Arutkavi

What was the issue and most of all how have you fixed this issue because i'm facing the same problem :  i can get an ipv4 address but not an ipv6 address, using statefull dhcp, via a trunk port.

thanks for you help

Razak