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@ LNBϟG
2025-04-26 00:09:15
Regarding your last question, I meant that the Lightning Network protocol includes an onion packet type, when a payment fails due to insufficient balance. It needs to be pushed further. Then the intermediate node on the route sends back an onion to the sender containing an error code indicating that the channel temporarily cannot send the payment due to fee changes. It also specifies the new fees in the same onion. I haven't looked at it right now, I don't have the protocol on hand, but it's definitely there. And it's described somewhere in the Bolt specifications.