=== DF-0569 PATCHED module — UDP NAT OOB fix validation ===
Module: ipfw3_nat.ko (patched with fix.diff, hash 400941d5...)
NAT configured with alias IP 10.0.2.15
Rule: 100 nat 1 udp from any to any out

DF-0569 UDP: driving 5000 outbound UDP flows to 10.0.2.2 (expect ~78 OOB writes at 1.56%)
  500/5000 flows sent (500 ok)
  1000/5000 flows sent (1000 ok)
  ...
  5000/5000 flows sent (5000 ok)

=== STATE CHECK (PATCHED) ===
TOTAL=    9828
TCP_ENTRIES=0          <-- FIX WORKING: zero OOB writes!
UDP_ENTRIES=9828

=== Before/after summary ===
Metric              | Unpatched | Patched
TCP entries (OOB)   |    102    |    0
OOB write rate      |   1.56%   |   0%
NAT functional?     |    yes    |   yes