Daniel-Constantin Mierla writes:
If you need to do two different topology striping, one for each Porxy1 steps, you have to try the development version and set different context for initial requests on Proxy1 steps. I didn't really test it for this use case, I needed context for some grouping without the case of spiralling, but thinking a bit about what it does internally, it may make it work better with spirals.
Thanks for the tip. We'll try with contexts after upgrade to 5.5. For now, the "solution" is to strip 100rel from Supported headers.
-- Juha