MODBUS: Underflow
This anomaly triggers if it detects the length of the data being less than 6 bytes (the length of the MBAP header which is the first in the PDU).
srx-branch-12.3
srx-branch-19.3
vsrx3bsd-19.2
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
srx-19.4
vsrx-12.3
srx-12.3
vsrx-19.2
srx-19.3