Constant STAT_RX_NON_UMSH 

pub const STAT_RX_NON_UMSH: u32 = 4836;

Receptions that passed CRC but are not UMSH packets (PROP_STAT_RX_NON_UMSH) — UINT32_LE. The test is the first octet’s protocol version and reserved bits, so a truncated UMSH frame still counts as UMSH; this is somebody else’s traffic on the same sync word. Requires CAP_STATS.