freebsd stable - Jan 2016 - pfi_table_update: cannot set 77 new addresses into table igb0

Hi list,

I've found out a problem on my server running FreeBSD 10.1-RELEASE-p19
(amd64) with 76 jails configured. The following message appears during the
system startup:

pfi_table_update: cannot set 77 new addresses into table igb0: 22

After that some jails have network communication problems. To restore network
communications I need to restart the pf service from the system console. Remote
attempts to restart pf freeze network operations at all.

My question is: if there is a system tuning variable which allows to fix my
problem?

-- 
Regards,
Serguey.