Charles-Henri Bruyand

`BBR` was added in 0.15 which is quiet old and I don't think we would even compile against it: https://github.com/cloudflare/quiche/releases/tag/0.15.0 So I don't think there is much harm changing that....

As I don't think we want to change the design, maybe somethingg like https://github.com/PowerDNS/pdns/pull/12558 could help controling the default behavior ?

@sfoutrel The first call to `if{port,url}up()` will always result in a negative return as checks are performed asynchronously and we use that first call to register the port/url. To rephrase,...