If you've experienced packet stalls while using Zenarmor or Suricata IPS with vlan/lagg interfaces:
OPNsense team has shipped a test kernel which has bug-fixes for netmap emulated driver, the default mode for vlan and lagg interfaces.
Please test and provide feedback. We want to make sure all issues are addresses this time. So, your help will be greatly appreciated.
https://forum.opnsense.org/index.php?topic=32114.0