router to handle deposits into and out of THORChain vaults. The Router is just a means for capturing token deposits and emitting memos.allowance to spend is given on the Router. The depositing user gives this allowance to the Asgard vault, which itself moves the allowance to each Ygg vault. Thus each Ygg vault can call into the Router to transfer out inside their allowances. This is a very gas-efficient way of achieving vault funding.owner)..Send() to transfer ETH assets outbound. When an outbound ETH tx is sent to a contract, it must complete execution with only 2300 Gas. If the recipient runs out of Gas, the network still considers the payment sent. Developers of THORChain UI's should check recipient ETH addresses for the presence of code and warn users who may have complex fallback functions that their payment may not succeed, and they could lose funds. Geth eth.getCode("0xaddress") may be useful.