Martian
Packets that turn up unexpectedly on the wrong
network because of bogus
routing entries.
Also a packet which has an altogether bogus (non-registered or ill-formed)
internet address, such as the test loopback interface [127.0.0.1]. Such a packet will come back labelled with a source address that is clearly not of this earth.
"The domain server is getting lots of packets from Mars.
Does that gateway have a martian filter?"
[
Jargon File]
