Hi, I found some info from vswitch.xml,it says "Masked data can improve performance by allowing megaflows to match on fewer fields." I do not know What kinds of flow atcion will use 'masked_set_action'. Can you give some demo flows and situation? Thanks, YUN -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20210713/27b6c404/attachment.html>