crashes/panics in pfsense 2.4.x FreeBSD 11.x with enabled IPSec and ipv4 forwarding
and this FreeBSD ticket with the fix
these crashes seem to be caused by refcount leak. only FreeBSD 11.x seems to be affected.
just wanted to create a ticket so that we can track if/when the fix from FreeBSD will make it to pfsense 2.4.x , such that we can switch from OpenVPN back to IPSec (before 2.5.x becomes fully stable).