I manage multiple websites for a large multi-national (dozens of offices around the world, each with its own set of IP addresses). I'm in the process of migrating from the old UA to the new GA4. Currently all my properties have filters applied to filter out internal traffic and traffic from our external monitoring service. These together are comprised by several hundred IP addresses and ranges. Presently I'm using regex filters and I can define filters on account level and then apply them to multiple properties.
With GA4, I can configure internal traffic on the stream level - which means I'll have to configure it separately for each individual property, listing all of these hundreds of IP ranges. Leaving aside the question of whether GA4 stream filter even supports that many IP ranges, is there a way to define this list once and then apply it to multiple streams?