Package: libkqueue0 Version: 2.0.3-1.1 Severity: normal Tags: upstream Native kqueue (tested on FreeBSD 11.2) has close-on-fork and close-on-exec behavior. libkqueue should follow it.
Close-on-exec is easy to do on epoll via epoll_create1 (or fcntl on Linux <2.6.27) Close-on-fork will require pthread_atfork use.