[Ecn-sane] what does ecnseen really mean?

[Dave Taht]

from a random box with bbr on and tons of connections.

```
% sysctl -a | fgrep ecn
net.ipv4.tcp_ecn = 2
net.ipv4.tcp_ecn_fallback = 1

% ss -antie 'src x.y/16' | fgrep bbr | fgrep -c ecn
524

% ss -antie 'src x.y/16' | fgrep bbr | fgrep -c ecnseen
484

% ss -antie 'src x.y/16' | fgrep bbr | wc -l
22037
```



-- 
"For a successful technology, reality must take precedence over public
relations, for Mother Nature cannot be fooled" - Richard Feynman

dave at taht.net <Dave Täht> CTO, TekLibre, LLC Tel: 1-831-435-0729