What is ETH in router?

Excuse me, could you please clarify what you mean by "ETH in router"? It seems like there might be some confusion here. ETH, typically stands for Ethereum, which is a decentralized blockchain-based platform that allows for the creation and exchange of digital assets and smart contracts. It's not commonly associated with routers, which are devices that connect networks together. Perhaps you're referring to some specific feature or function related to routers and Ethereum, but without more context, it's difficult to give an accurate answer. Could you please elaborate on your question?