int tnl_set_addr(struct vport *vport, const unsigned char *addr);
const char *tnl_get_name(const struct vport *vport);
const unsigned char *tnl_get_addr(const struct vport *vport);
int tnl_set_addr(struct vport *vport, const unsigned char *addr);
const char *tnl_get_name(const struct vport *vport);
const unsigned char *tnl_get_addr(const struct vport *vport);