Got IPv6 Working on Cisco DPC3941B
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Got IPv6 Working on Cisco DPC3941B
Got IPv6 Working on Cisco DPC3941B
I decided to come back to this after some time and got it all working. I hope this helps folks.
I have a Cisco DPC3941B and a Ubiquiti EdgeRouter Lite
I have a static IPv4 block (/29) and a static IPv6 block (/56)
My delegated prefix is 2603:xxxx:xxxx:d000::/56
My gateway is using 2603:xxxx:xxxx:d000::/64
I am able to perform prefix delegation for 2603:xxxx:xxxx:d0e0::/59
Attempts to use larger prefixes fail
That still gives me 32 /64 subnets (2603:xxxx:xxxx:d0e0::/64 - 2603:xxxx:xxxx:d0ff::/64)
eth0 = WAN
eth1 = LAN
eth2 = WLAN
Here is the basic config that worked for me.
interfaces {
ethernet eth0 {
address 75.xxx.xxx.129/29
dhcpv6-pd {
pd 0 {
interface eth1 {
host-address ::1
service slaac
}
interface eth2 {
host-address ::1
service slaac
}
prefix-length 59
}
prefix-only
rapid-commit disable
}
}
}
You could keep going and configure specific PD options, stateless DHCPv6, IPv6 firewall rules, etc. Hopefully this will get you started.
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Re: Got IPv6 Working on Cisco DPC3941B
Re: Got IPv6 Working on Cisco DPC3941B
PfSense has it a bit different in that the LAN has to be statically set, but I too get the /59.
EDIT: Also, I'm able to do stateful DHCPv6 through that method as well. If there are people who would like the steps I used to do that, I can post them. I haven't done any prefix delegation though and I suspect that I'd have to have another PFsense box in order to do that reliably, but I could be wrong.
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Re: Got IPv6 Working on Cisco DPC3941B
Re: Got IPv6 Working on Cisco DPC3941B
Hi Veddy254,
I have been trying to get IPv6 working on my IPsense enviroment, If you could post your steps I would appreciate it.
Thank you
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Re: Got IPv6 Working on Cisco DPC3941B
Re: Got IPv6 Working on Cisco DPC3941B
Sadly, it seems to have quit and I'm not sure why. I will parse through my logs here and try to figure out why it crapped out.
EDIT: So it seems to break after a week and I think I finally figured out why. My way seems to have involved temporarily doing a LAN - Track Interface -> WAN with PD-ID 0 and then swapping over to static which works... until the DHCP lease runs out on the DPC3941B for the original prefix request via Track Interface.
EDIT #2: BREAKTHROUGH! Logged into the gateway device and set the DHCP lease time to Forever (DISCLAIMER: now if the modem reboots, this likely will crap out but at least it's an easy albeit bothersome fix.) Had the LAN interface pick up Prefix ID 0 via Track Interface -> WAN. Let the LAN side get an IP then swapped it over to a static /59 with the Prefix ID 0 being the parent (2603:xxxx:yyy:e0:: is how my /59 looks with the Prefix ID as 0). I then defined my prefix delegation as e1 through ff (2603:xxxx:yyy:e1:: in the from field, 2603::xxxx:yyy:ff:: in the to field) as my prefix delegation range which means that anything other that e0 is an IPv6 prefix that I can delegate out as a separate /64. Confirmed IPv6 connectivity on my desktop.