First Appearance: TBFGK 104
Archon's Sales Pitch
"Your dual-purpose, single-solution item for capture AND carriage!"Erf-b3-p104
Given the large amount of material Lilith had to carry in Hvs.tCF 104, it is possible that they have magical qualities to reduce encumbrance.
Real World References
It's a pun on the Ethernet and the facts that they have dual purpose and are nets.