mulit: use min relay fee error

config_builder.go

@@ -1807,8 +1807,11 @@ func broadcastErrorMapper(err error) error {
 	// in the first place are rebroadcasted despite of their backend error.
 	// Mempool conditions change over time so it makes sense to retry
 	// publishing the transaction. Moreover we log the detailed error so the
-	// user can intervene and increase the size of his mempool.
+	// user can intervene and increase the size of his mempool or increase
-	case errors.Is(err, chain.ErrMempoolMinFeeNotMet):
+	// his min relay fee configuration.
+	case errors.Is(err, chain.ErrMempoolMinFeeNotMet),
+		errors.Is(err, chain.ErrMinRelayFeeNotMet):
+
 		ltndLog.Warnf("Error while broadcasting transaction: %v", err)
 
 		returnErr = &pushtx.BroadcastError{

lnwallet/btcwallet/btcwallet.go

@@ -1133,7 +1133,9 @@ func mapRpcclientError(err error) error {
 	// If the wallet reports that fee requirements for accepting the tx
 	// into mempool are not met, convert it to our internal ErrMempoolFee
 	// and return.
-	case errors.Is(err, chain.ErrMempoolMinFeeNotMet):
+	case errors.Is(err, chain.ErrMempoolMinFeeNotMet),
+		errors.Is(err, chain.ErrMinRelayFeeNotMet):
+
 		return fmt.Errorf("%w: %v", lnwallet.ErrMempoolFee, err.Error())
 	}
 

sweep/fee_bumper.go

@@ -565,7 +565,10 @@ func (t *TxPublisher) createRBFCompliantTx(
 
 		// If the error indicates the fees paid is not enough, we will
 		// ask the fee function to increase the fee rate and retry.
-		case errors.Is(err, lnwallet.ErrMempoolFee):
+		case errors.Is(err, lnwallet.ErrMempoolFee),
+			errors.Is(err, chain.ErrMinRelayFeeNotMet),
+			errors.Is(err, chain.ErrMempoolMinFeeNotMet):
+
 			// We should at least start with a feerate above the
 			// mempool min feerate, so if we get this error, it
 			// means something is wrong earlier in the pipeline.
@@ -574,7 +577,8 @@ func (t *TxPublisher) createRBFCompliantTx(
 
 			fallthrough
 
-		// We are not paying enough fees so we increase it.
+		// We are not paying enough fees to RBF a previous tx, so we
+		// increase it.
 		case errors.Is(err, chain.ErrInsufficientFee):
 			increased := false