Got this email from @Sylvain_WMFr (translation is bad because its mine):
"I recently had an call from Orange S.A. that reported me that their users had difficulties to access to Wikipedia. While this has finally been solved without their intervention, they suspect a saturation problem with the forwarder (Tele2) and would like to have a contact to the WMF which can run tests related to transporting data from Wikipedia (a priori since the mirror located in the Netherlands.)"
I think it is related to architecture, but I'm not sure. Please triage it! :)