Configure IPv6 on multiple LAN interfaces

JKnott

I just checked on Windows 10 and also see /128, where I should see /64. I guess this is another example of where Microsoft does something weird (stupid?). Again, you should not see /128 on a LAN. Linux & pfSense (FreeBSD) show the correct /64.

johnpoz

@JKnott not going to disagree with you.. Was just pointing out that you can see that.. In MS infinite wisdom they don't even show you the prefix just looking at the IPs.. with say ipconfig, to see the prefix for IPv6 you have to look at the routing table..

I mean - sure the prefix should pretty much always be a /64, so I could see maybe leaving it off - but why not just show it.. So its easy to see there is a 64 on there and not some issue like what the OP was having with a /60 etc.

BTW if you couldn't tell my MS comment and wisdom is being sarcastic - heheh

ler762

@DrPhil said in Configure IPv6 on multiple LAN interfaces:

Hi,

I am trying to configure IPv6 on multiple LAN interfaces (LAN and DMZ).

Did you ever get this sorted? The thread seemed to peter out at the end...

What works for me on Verizon FIOS

Interfaces / Wan

IPv4 Configuration Type dhcp
IPv6 Configuration Type dhcp6
DHCPv6 Prefix Delegation size 56
Send IPv6 prefix hint checked
Do not wait for a RA checked

it ends up looking a bit weird -- only a link local (FE80::something) configured on the Wan interface, but it works (you can probably find the RFC about using only ipv6 link local addresses on routers - I'm not going to bother searching)

Then on the LAN interfaces

IPv6 Configuration Type Track interface
and under "Track IPv6 Interface"
IPv6 Interface WAN
IPv6 Prefix ID <pick a unique number -- I like using the vlan #>

Then under "Services / DHCPv6 Server"

DHCPv6 Server gets checked
Range pick something
Prefix Delegation Size is 64
Default lease time I used the 7200 default
Max lease time I went with 28800. I started with one day but the dhcpv6 address occasionally showed up as deprecated and 'valid_lft forever preferred_lft 0sec'

Hopefully that's a good enuf description :)