On Fri, 7 Jul 1995 02:32:08, Tony Li <tli @
cisco .
com> wrote:
Code 10, for all you geeks. Myy understanding is that this has been
out there for a number of years.
Yup. But some implementations -- for example, SunOS 4.1.1 -- will ignore
ICMP Unreachable messages with ``unknown'' subcodes. Specifically, it
ignores any messages if that field is greater 5... (It's not Sun's
fault, of course; they inherited that code from 4.2bsd. And 4.4bsd, or
at least BSD/OS, hasn't gotten any better; it *still* rejects unknown
subcodes, though it has a larger set of known ones, including 10.)
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