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Optimize routing with mixed 6to4 and v6 native connection
![[de]](/s/countries/de.gif) Shadow Hawkins on Tuesday, 06 July 2010 10:17:53
Hi folks,
I'm running a static SixXS tunnel with subnet very successfully since quite a while.
Now my uplink provider is native IPv6 enabled and delegated a /64 native address/subnet to me.
So my router now has two IPv6 addresses, one SixXS 6to4 tunnel end point and the other from my provider. I still have the v6 default gateway set to the SixXS tunnel as otherwise my SixXS subnet is not reachable anymore.
I was wondering if there is something useful I could do with my native IPv6 connection in the router, for instance some kind of asymmetric routing by setting the default route to my native IPv6 connection. My understanding is that in this scenario incoming packages for my subnet would pass the SixXS tunnel and outgoing (answering) packages are routed back via my routers native IPv6 connection. Is something like this possible or useful? At least I would expect to get a more close connection to IPv6 clients this way at least for sending out packages.
Would like to hear your suggestions :-)
Br
Julian
Optimize routing with mixed 6to4 and v6 native connection
one SixXS 6to4 tunnel
As a nitpick, I am really sure that it is not a 6to4 tunnel (RFC3056) tunnel, as SixXS doesn't do 6to4, we do do 6in4 (RFC4213).
I suggest if you have native connectivity though to terminate your tunnel, as unless the native provider provides really bad connectivity the native will always be faster than a tunnel. Doing routing tricks will only hurt, and remember SixXS PoPs will not route packets for other prefixes.
Optimize routing with mixed 6to4 and v6 native connection
Shadow Hawkins on Thursday, 08 July 2010 16:07:03
Yea you are right with the 6in4....
Maybe I was not clear enough: My upstream provider does not give me a second address space to be routed into my network like I have from SixXS, I only have this single /64 transfer network.
If I could get an additional address space I would surely prefer this as a total IPv6 native connection.
That's why I need to keep my /48 from SixXS and was just wondering if I could improve the routing with my router having IPv6 native connection.
Optimize routing with mixed 6to4 and v6 native connection
It is an 'OR' situation, either use the one or the other.
You should definitely ask for more IPv6 address space, theoretically, according to RIR documentation you are a customer and a separate site thus they can justify a /48 for you. Of course when you then have multiple machines/VM's just that one /48.
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![[ch]](/s/countries/ch.gif)
on Tuesday, 06 July 2010 10:43:28
Posting is only allowed when you are