In message <capkb-7c5lx0qwypfq5qyyvfahsbqfvw7tkhsuezvqdtmvyc...@mail.gmail.com> , Baldur Norddahl writes: > Hello, > > Let me introduce another first world problem. We use DHCPv4 to assign each > user a IPv4 /32 and DHCPv6-PD to assign a IPv6 /128 WAN plus a /48 prefix. > All good. > > However we are an ISP where the customer chooses his own CPE. We just ship > a modem/mediaconverter/ONU with one ethernet port. The customer is expected > to plug his home router in here. > > However sometimes we have a customer that wants to buy an extra IPv4 > address. We are happy to sell him that. Now he has two (or more) IPv4 > addresses. Turns out most of these customers are not configuring the extra > IPv4 addresses on a single home router (most CPEs probably can not handle > multiple WAN addresses anyway). Instead these people put in a switch and > then have multiple devices, each with one IPv4. > > A typical setup is a home router (CPE) plus a server, or they might have > some VPN device forced on them by their employeers or they might simply be > sharing the internet connection with the neighbour (we allow that). > > However we are forbidden to deliver more than one /48. What to do?
Who is forbidding you? Not the IETF. Not the RIRs. > Currently we will deliver exactly one /48 to one device and just say sorry, > you will have to figure out how to get IPv6 on your other devices. The > experience is that 100% of the guys then simply do not have any IPv6 on the > other devices. Figuring out how to route a slice of that /48 is too much > for even most technical minded customers. > > Would you deliver say /52 prefixes instead but reserve /48, so the DHCP > server has the option to deliver up to 16x /52 per customer? > > Regards, > > Baldur Just have them deploy a IPv6 router and configure it to brigde IPv4. As far as the existing clients are concerned they will just be on a LAN with a /64 out of the /48 and IPv4. A cheap linux / *bsd box will do this. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
