After much trial and error and having to change my MAC address to get around Comcast giving me a /64 and /60 lease, I finally have IPv6 working using prefix delegation on my ER-Lite!
I have the ER-Lite to be my internal DNS server, WAN on eth0, LAN on eth1, and WLAN on eth2.
The last piece of the puzzle that I'd like so solve is having the router broadcast it's interface IPv4 and IPv6 address as the DNS server to clients. On the IPv4 side, this is done somewhat automatically. However on the IPv6 side, it's a bit more complicated. Ideally, the IPv6 DNS address would be sent to clients and if Comcast happened to give me a different IPv6 lease, then the router would update that address automatically.
I have seen some configurations that use a static RDNSS config, but I don't think that's what I want as if the IPv6 lease changes, I would need to catch that and update manually. Also, I am almost entirely Windows and it seems like Windows doesn't support RDNSS. So that makes me sad.
Has anyone accomplished this? The relevant portions of my config is below. Thanks!
interfaces {
ethernet eth0 {
address dhcp
description Internet
dhcpv6-pd {
pd 0 {
interface eth1 {
host-address ::1
prefix-id :1
service slaac
}
interface eth2 {
host-address ::1
prefix-id :2
service slaac
}
prefix-length 60
}
rapid-commit enable
}
duplex auto
firewall {
in {
ipv6-name WAN6_IN
name WAN_IN
}
local {
ipv6-name WAN6_LOCAL
name WAN_LOCAL
}
}
speed auto
}
ethernet eth1 {
address 10.0.1.1/24
description LAN
duplex auto
ipv6 {
dup-addr-detect-transmits 1
router-advert {
cur-hop-limit 64
link-mtu 0
managed-flag true
max-interval 600
other-config-flag false
prefix ::/64 {
autonomous-flag true
on-link-flag true
valid-lifetime 2592000
}
reachable-time 0
retrans-timer 0
send-advert true
}
}
speed auto
}
ethernet eth2 {
address 10.0.2.1/24
description WLAN
duplex auto
ipv6 {
dup-addr-detect-transmits 1
router-advert {
cur-hop-limit 64
link-mtu 0
managed-flag true
max-interval 600
other-config-flag false
prefix ::/64 {
autonomous-flag true
on-link-flag true
valid-lifetime 2592000
}
reachable-time 0
retrans-timer 0
send-advert true
}
}
speed auto
}
loopback lo {
}
}
service {
dhcp-server {
disabled false
hostfile-update disable
shared-network-name LAN1 {
authoritative disable
subnet 10.0.1.0/24 {
default-router 10.0.1.1
dns-server 10.0.1.1
lease 86400
start 10.0.1.10 {
stop 10.0.1.243
}
}
}
shared-network-name LAN2 {
authoritative disable
subnet 10.0.2.0/24 {
default-router 10.0.2.1
dns-server 10.0.2.1
lease 86400
start 10.0.2.10 {
stop 10.0.2.243
}
}
}
}
dns {
forwarding {
cache-size 1000
listen-on eth1
listen-on eth2
system
}
}
}
system {
name-server 2620:0:ccc::2
name-server 2620:0:ccd::2
name-server 208.67.222.222
name-server 208.67.220.220
offload {
hwnat disable
ipsec enable
ipv4 {
forwarding enable
vlan enable
}
ipv6 {
forwarding enable
vlan enable
}
}
}