Symbol: IFCAP_VLAN_HWFILTER
sys/dev/virtual/virtio/net/if_vtnetvar.h
223
#define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */
sys/dev/virtual/virtio/net/if_vtnetvar.h
232
#define IFCAP_VLAN_HWFILTER 0