Hi Gert,
i find it very strange that your ISP doesn't offer public addresses on
the WAN interface however I think this is actually standards compliant
so we have to deal with it.
It's called "IPv4 exhaustion"... DS-Lite is one of the way to deal
with it (which effectively gives you "only one NAT in the path"), the
other way is "hand out RFC1918 or 100.64.* addresses and double-NAT".
Both stinks, but unless someone finds another few billion IPv4 addresses
somewhere, this is what large scale providers need to do.
I'm sorry but it seems you misunderstood me. We were talking about IPv6
addresses here. It seems that Hennings' ISP "only" offers a delegated
prefix but no global IPv6-address on the WAN-connection (or there is an
unknown issue acquiring said address which I don't know of). I know that
RFC 7084 requires a CER to actually deal with this (Weak ES model and
all) so I added a fix to allow the DS-Lite source endpoint address to be
acquired from a downstream interface.
Cheers,
Steven
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