Many thanks, this fixed the problem (or got around it at least :) - so not sure where the bug is but I suspect it's the mixture of ?3456 and ?val=3456 in the query string after the lua pass to backend (I wasn't reading "host" at backend properly, hence 404)


> local uri = string.gsub(ngx.var.request_uri, "?.*", "")
> local res = ngx.location.capture("/proxy" .. uri,
> { args =
> { country = ngx.var.geoip_country_code, host = ngx.var.host }
> } )

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