An update from me here.
Found a suggestion to add the Realtek drivers available as a plugin, and use them instead of the default FreeBSD drivers. That work as a charm, and the firewall have been rock-solid now for 11 days.
Found a suggestion to add the Realtek drivers available as a plugin, and use them instead of the default FreeBSD drivers. That work as a charm, and the firewall have been rock-solid now for 11 days.