[mssdflt]

| That's not exactly what the code says, or does.  Certainly if it causes
| 512-byte (data) packets to some types of hosts when it is set to 512,
| and 1460-byte packets to the same hosts when it is set to 1460, then
| obviously it can raise *and* lower the MSS

It changes the largest segment size that you admit to being able
to receive, whenever a TCP connection is started.

It has nothing to do with what segment size you will send; that
is limited by what mssdflt is set to on the other system.

	Sean.