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Kai Krueger:

tomorrow is world IPv6 day [1]. If I have read correctly, Wikimedia is intending to participate in the test day. I was wondering if that extends to the toolserver as well and in particular to the tile server?

No. Most services except http://toolserver.org are IPv6-enabled, but it was only deployed a few days ago and I want to monitor it for a bit before enabling it on the main site. Once this is done (probably a few days) we will enable IPv6 permanently.

I suspect mod_tile should mostly be agnostic to which IP version apache uses, so hopefully it should just work in most cases.

In any case the internal communications will remain IPv4, because /tiles is proxied via ZWS, which does not support IPv6.

Actually, I suppose there's no point sending /tiles via ZWS now -- it makes more sense to do that at the front-end proxy instead of ZWS. I'll have a look at changing that tomorrow.

However, I did add the bandwidth throttling code a while back that is definitely not IPv6 safe. It is used to limit the number of tiles a single IP can download,

This won't work, for the same reason (all requests appear to come from only two IPs).

- river.