On Fri, Dec 20, 2013 at 12:30 AM, Owen DeLong <owen@delong.com> wrote:
FYI - DHCP-PD is now working better in RouterOS 6.5
Prefix length hints are now available (CLI) only.
/ipv6 dhcp-client add add-default-route=yes interface=<wan interface> pool-name=dhcp-pd \ prefix-hint=::/60
I'd like to encourage people to use prefix-hint=::/48.
The router should accept the /60 and deal with it, but it's better to have Comcast's logs show that you requested a proper full-size prefix.
I'm almost afraid to ask about the phrase "add-default-route=yes" in the dhcp-client configuration. That seems wrong on the face of it since you should be getting your routing information from RA and not DHCP.
I think if I ask (via wide-dhcpv6-server) for more than is going to be sent I don't get anything configured at all :( I'm pretty sure I get sent a /64 in the response packet, but I don't install that.. which leads to busted v6 configuration on my device.
In the case of Comcast (and anecdotally ISC DHCP) - You'll either need to wait out the the lease time (4 days) or ask Comcast to nicely clear out your /64 lease manually. Release/renew doesn't release your current DHCP lease. I was getting A /64 and /60 (/64 had a preference of 255) before Comcast removed the /64 lease manually.
Is it somehow harmful to have both?
Owen