* Define: `ND_LONGJMP_FROM_TCHECK` before including `netdissect.h`
* Make sure that the intersection of `GET_*()` and `ND_TCHECK_*()` is minimal,
but at the same time their union covers all packet data in all cases.
-
+
You can test the code via:
```
sudo ./tcpdump -s snaplen [-v][v][...] -i lo # in a terminal
not only a valid packet but any arbitrary random sequence of octets (packet
* built malformed originally by the sender or by a fuzz tester,
* became corrupted in transit or for some other reason).
-
+
Print with: `nd_print_invalid(ndo); /* to print " (invalid)" */`
* Use `struct tok` for indexed strings and print them with