I did further debugging... It is indeed our 213.222.29.194 gateway that has the issue, it misses most of the routes at least since yesterday (I notice because I have some mail in the queue routed over IPIP that has stalled since yesterday). But I do have another independently hosted IPIP host in the Netherlands that receives all the normal routes. It is at IP 89.18.172.156 and is located in another datacenter. So likely it is a routing issue on the internet... Rob