6rd IPv6 addresses are considered “equivalent to native IPv6” (RFC5969) because from the end device perspective the end-to-end principle is maintained and the resulting IPs are globally routable. Small disadvantages of 6rd are, for example, the reduced MTU and the theoretical possibility of a changing public IPv4 address of the router and thus also a change of the IPv6 prefix. In practice, 6rd has proven to be a pleasingly good compromise.
The 6th environment implemented by Swisscom assigns each customer a /60 prefix, ie. 4 bits remain for the individual creation of a maximum of 16/64 networks. This is less than the size of a /56 block recommended in RFC6177 (which would allow 256 networks), but given the current level of distribution of IPv6, it is at least a useful start.
With the Internet boxes you can currently only use the first of the sixteen /64 prefixes. You also cannot set up static IPv6 routes. As long as only a few users ask for such features, Swisscom will probably not develop anything further in this direction. However, with a healthy dose of specialist knowledge and/or motivation to learn, it is absolutely possible to subdivide your home network accordingly at your own risk using an alternative router, e.g. under OpenWRT/LEDE/DD-WRT/VyOS/whatever.
Have you tried turning it off and on again?
Our colleagues from the network are working on making our network end-to-end IPv6 capable. This is very complex and we have to be careful that something doesn’t suddenly break. Then nothing works anymore (in Switzerland). Routers can theoretically do this, but a function is still missing to automatically recognize the type of IPv6 (native vs. tunnel, etc.). Will be developed in early 2019. Should come in R10.2 of Internet Boxes. As always, all information is without guarantee. A lot can still change.
Hello, and I apologize in advance as I use Google translate to write my German!
I’ve just set up an Internet Box Plus and am running into this limitation where it looks like a /60 is being offered. I can only route traffic from the first assigned /64 and I need more than one /64 in my house.
It also doesn’t seem to support prefix subdelegation. I see a firmware 10.2. Do we have any idea when this will be out?
@MCFH: as you correctly determined, even with the latest firmware on the Internet box you can only use the first of 16 possible /64 networks. Likewise, prefix delegation or static IPv6 routes are not currently implemented. There is probably no demand for it at the moment. That’s a shame, but somehow it’s understandable that there isn’t much development in this regard.
Have you tried turning it off and on again?
Thank you for your confirmation - very disappointing. My ISP in the UK gives me a /48 with prefix delegation and a /64 on the WAN side and everything works with any hardware today!
When you say static routes are not implemented, what do you mean? I set a static route downstream in my /60 and all traffic flows fine, not from the second /64.
@MCFH: Static routes are references to networks that can be reached in a way other than via the default gateway. In Linux, for example, you can do this with the relatively self-explanatory command
ip -6 route add 2001:db8:abcd::/48 via 2001:db8:1234:5678::99
Of course, on a consumer router, something like this is configured in the GUI and not via a CLI command. There is already a corresponding option on the IB for IPv4 (Expert Mode->Network->Static Routes), but not yet for IPv6. Static IPv6 routes on a router with a potentially dynamic 6th prefix don’t make much sense either. Maybe IPv6@swisscom or someone from the IB team can give us some insight into future planning?
Have you tried turning it off and on again?
Gerade bemerkt:
C:\
slookup community.swisscom.ch
Server: internetbox.home
Address: 2a02:120b:2c2c:ed0:dafb:5eff:fe1c:cc70
Non-authoritative answer:
Name: d1qto3qhg8t8rr.cloudfront.net
Addresses: 2600:9000:20ad:7800:d:906a:69c0:93a1
2600:9000:20ad:9000:d:906a:69c0:93a1
2600:9000:20ad:5600:d:906a:69c0:93a1
2600:9000:20ad:e00:d:906a:69c0:93a1
2600:9000:20ad:5000:d:906a:69c0:93a1
2600:9000:20ad:b200:d:906a:69c0:93a1
2600:9000:20ad:c00:d:906a:69c0:93a1
2600:9000:20ad:c800:d:906a:69c0:93a1
13.32.176.10
13.32.176.71
13.32.176.254
13.32.176.40
Aliases: community.swisscom.ch
scs.lithium.com
C:\
Ist neu, oder? Gratuliere
Have you tried turning it off and on again?
@Anonymous what is the status of things (IPV6, RES customer segment) asks @Nallehau79