"ie0: Ethernet jammed" on a Sun 4/110

[at aplvax.jhuapl.edu]

Recently the group I'm in obtained a Sun 4/110.  We are having a problem
getting the Sun 4 to interface with our ohter processors.  Regardless of
whether an Ethernet cable is plugged in or not, attempts to use the network
generate the message

	ie0: Ethernet jammed

This same Ethernet cable works when plugged into our Sun-3.

The Sun 4 is a VMEbus machine (*not* multibus).  Anyone have any suggestions
as to what might be wrong before I start screaming, "Hardware problem!"?

							Thanks,
							   Tony

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