Maybe they never fail for you because the receiver is always using a highly connected custodial provider like Fountain or LNPay, which goes against the primary thesis of v4v and why this keysend scheme was used in the first place I think.

Anyway, in my case the payment did arrive on my node, but some CLN screw-up happened and it wasn't resolved as it should have been. I still don't understand why.

fiatjaf

bitcoin

Never depend on v4v to feed your family: silently missing all keysend payments

I’ve always wondered what happens when these payments fail. I’ve never gotten a payment error when I’m streaming payments which seems unlikely.