Hello,
I have a simple working IPv6 configuration with stateless autoconfig on Dialer1 and it is working fine. My config is this:
!
ipv6 unicast-routing
!
ipv6 dhcp pool BVI1_DHCP
import dns-server
import domain-name
!
interface Dialer1
description connected to Internet through VDSL
mtu 1492
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat outside
ip virtual-reassembly in
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer idle-timeout 0
dialer-group 1
no cdp enable
ipv6 address autoconfig default
ipv6 enable
ipv6 verify unicast reverse-path
ipv6 dhcp client pd ASSIGNED-PREFIX
ipv6 traffic-filter IPV6IN in
ppp authentication chap pap callin
ppp chap hostname xxxx@myISP-A.com
ppp chap password xxxxxxxxxxxxxxxxxx
ppp pap sent-username xxxx@myISP-A.com password xxxxxxxxxxxxxxxxxx
ppp ipcp dns request accept
!
interface BVI1
mac-address b000.abcd.abcd
ip address 192.168.x.x 255.255.255.0
no ip redirects
no ip unreachables
ip mtu 1476
ip flow ingress
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1436
ipv6 address ASSIGNED-PREFIX ::/64 eui-64
ipv6 enable
ipv6 nd other-config-flag
ipv6 verify unicast reverse-path
ipv6 dhcp server BVI1_DHCP
!
ipv6 route ::/0 Dialer1
!
But I also have another stateless connection over Dialer2 which i want to use it concurrently :
!
interface Dialer2
mtu 1492
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat outside
ip virtual-reassembly in
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 2
dialer idle-timeout 0
dialer-group 2
no cdp enable
ipv6 address FE80::ABCD:ABCD:ABCD:766C link-local
ipv6 address autoconfig
ipv6 enable
ipv6 dhcp client pd ASSIGNED-PREFIX-Dialer2
ipv6 traffic-filter IPV6IN in
ppp authentication chap pap callin
ppp chap hostname xxxx@myISP-B.com
ppp chap password xxxxxxxxxxxxxx
ppp pap sent-username xxxx@mymyISP-B.com password xxxxxxxxxxxxxx
ppp ipcp dns request accept
!
As I said and before, under IPv4 everything is working fine and I am able to route specific traffic there or doing some load balancing with CEF etc. Now regarding IPv6, as you can see, there is a prefix-delegation request on Dialer1 which acquires the assigned prefix from ISP-A connection and I am able to use it with my inside interface (BVI1) ip. What I want to do is to be able to acquire the prefix AND from my ISP-B and use it in BVI1 as an additional ip:
!
interface BVI1
mac-address abcd.abcd.abcd
ip address 192.168.x.x 255.255.255.0
no ip redirects
no ip unreachables
ip mtu 1476
ip flow ingress
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1436
ipv6 address ASSIGNED-PREFIX ::/64 eui-64
ipv6 address ASSIGNED-PREFIX-Dialer2 ::/64 eui-64
ipv6 enable
ipv6 nd other-config-flag
ipv6 verify unicast reverse-path
ipv6 dhcp server BVI1_DHCP
!
Unfortunately, ipv6 dhcp client pd ASSIGNED-PREFIX-Dialer2 seems it does not working for some reason. However Dialer2 is getting GUA and seems working. What I am doing wrong???
cisco#sh ipv6 int d2
Dialer2 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::ABCD:ABCD:ABCD:766C
No Virtual link-local address(es):
Stateless address autoconfig enabled
Global unicast address(es):
2A02:XXX:XXX:ABCD:ABCD:ABCD:ABCD:766C, subnet is 2A02:XXX:XXX:XXXX::/64 [EUI/CAL/PRE]
valid lifetime 2591878 preferred lifetime 604678
Joined group address(es):
FF02::1
FF02::2
FF02::1:FFE0:766C
MTU is 1492 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
Input features: Common Flow Table Stile classification On Cypher Text Dialer i/f override Access List Verify Unicast Reverse-Path Common Flow Table Post VPN Stile classification On Clear Text
Output features: Common Flow Table Stile Classification CCE Classification Zone based Firewall Dialer idle reset
Inbound access list IPV6IN
IPv6 verify source reachable-via rx, allow default
0 verification drop(s) (process), 0 (CEF)
0 suppressed verification drop(s) (process), 0 (CEF)
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds (using 30000)
ND advertised reachable time is 0 (unspecified)
ND advertised retransmit interval is 0 (unspecified)
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
ND RAs are suppressed (periodic)
Hosts use stateless autoconfig for addresses.cisco#sh ipv6 general-prefix
IPv6 Prefix ASSIGNED-PREFIX, acquired via DHCP PD
XXXX:XXX:XXX:XXXX::/56 Valid lifetime 69931, preferred lifetime 69931
BVI1 (Address command)
IPv6 Prefix ASSIGNED-PREFIX-VLAN3, acquired via DHCP PD
BVI1 (Address command)
Thanks for your time
