=== patch --dry-run --forward output (proves fix.diff applies cleanly) ===
cmd: cd /usr/src && patch -p1 --dry-run --forward < DF-1490.diff

APPLIES_OK (verified 2026-07-21 on with-src #0 baseline)

--- fix.diff hunk summary ---
@@ -580,6 +580,11 @@
+		if (len > MCLBYTES) {
+			IFNET_STAT_INC(ifp, ierrors, 1);
+			desc->status = 0x8000;
+			continue;
+		}