[trasz]

it would be somewhat counterproductive to introduce yet another sandboxing mechanism, just to work around a problem created by upstream - especially in case of mechanism as awesome as Capsicum :-)

Yes, the GPL license would force them to share their changes. Thing is, they wanted to upstream them anyway - AFAIK the problem is on the other (accepting) side.

[sydney6]

Yes, i guess there is little doubt that capsicum is the superior (compared to seccomp) capabilities framework, but if it's not used outside of FreeBSD's base, (e.g. ssh, bhyve, etc.) then it is indeed a shame.