Questions tagged [lightning-routing]

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1answer
41 views

Where are my lightning routing fees stored (lnd), when do they get payed out?

I watch my lightning node (lnd) routing some amounts. And with lncli feereport I see some sums, let's say 700 sats for this week. But where are those sats? How can I lookup the accumulated routing ...
3
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1answer
38 views

lnd stoped routing - unable to update fee rate

I used to have about 5 routings per day. Now, since three days I don't have any routing. In my lnd.log I find lines like this: grep ERR lnd.log 2021-09-19 22:40:53.187 [ERR] HSWC: ChannelLink(700510:...
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0answers
30 views

lightning nodes cannot find route

I have two lightning nodes, Bob and Charlie (using bitcoind backend with LND). They both have an open and funded channel with this testnet faucet: https://faucet.lightning.community/ Both nodes have a ...
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0answers
58 views

How can I increase the routing my 'small' lighting node performs?

I know this question has been asked a lot. However I am not able to grasp the correct approach to address this. Let me give you the context: I spun up an LND node to start experimenting and ...
0
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1answer
35 views

Is it possible to programmatically or preemptively deny any/all open_channel Lightning messages coming into your node?

If so, that would make it possible for that same node to have 1 very well funded inbound channel with only 1 other node that they also own and price gouge fees to route payment to them through this ...
2
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1answer
48 views

What exactly are route hints?

In the documentation for LND's addInvoice rpc call there's a field for something called route_hints which are described as: Route hints that can each be individually used to assist in reaching the ...
6
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1answer
260 views

Can PTLCs and HTLCs be mixed along a route?

When PTLCs get introduced on the Lightning Network, do all hops along a route need to use either HTLCs or PTLCs, or would it be possible to create a route where some nodes use PTLCs and some use HTLCs?...
3
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1answer
91 views

Would a min_fee setting for Lightning channels make sense?

What is a min_fee? Having a min_fee means changing the fee calculation to max(min_fee, fee_rate * amt), potentially replacing the base_fee. My reasoning behind this is that it prevents 0-fee payments –...
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1answer
28 views

Would restricting channels to a maximum make LN more decentralized?

Currently LN seems a bit centralized - few central, well funded nodes seem to route transactions and make profits. I was wondering if limiting the number of channels a node can open to a certain max ...
5
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1answer
218 views

What are the implications of min_htlc_size in "Pickhardt Payments" on the Lightning Network?

I've read the paper "Optimally Reliable & Cheap Payment Flows on the Lightning Network" by Rene Pickhardt & Stefan Richter and I'm tempted to assume the answer to my question, but I ...
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0answers
16 views

Transfer Outbound to Inbound liquidity - Umbrell node

I have an Umbrell node, and few channels open with outbound liquidity as I don't know how to open inbound liquidity. I want to close one of my outbound channel that is mostly offline and transfer this ...
3
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1answer
264 views

Why was the base_fee for the routing fee calculation of the Lightning Network included?

Currently and as defined by BOLT 07 on the Lightning Network, the fees for forwarding an HTLC of amount amount_to_forward are computed as: fee_base_msat + amount_to_forward * ...
2
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1answer
53 views

Lightning Network Channels - Should we have 1 channel or 2 channels per peer?

In short I just wanted to ask for clarification, is it optimal to open two channels with each peer e.g, Or it is better to have one channel e.g, I look forward to your advice/response. Sincerely,
0
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1answer
66 views

What are the different kinds of Lightning routing nodes?

I understand that there are end users at the edge of the network (typically with private channels) and routing nodes (with public channels) doing the routing of payments. What are the different kinds ...
1
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1answer
39 views

Find Lightning node for channel creation based on amount and route

Is there a tool to identify a Lightning node that will accept a channel open request and that matches the two conditions below? Accepts channel amounts of less than or equal to X. Can route payments, ...
2
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1answer
92 views

How much privacy does Lightning actually have?

I can't find any information on what information is actually contained within a lightning transaction. Lets say Alice wants to pay Bob on lightning and routes through R1, R2, R3 in the following order ...
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0answers
61 views

Circular rebalance through 1 of 7 channels always times out

I have the following 8 channels open I am able to do a circular rebalance through the first 6 as expected The bottom 2 channels are to the same node Every time I try to do a circular rebalance (tried ...
1
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1answer
108 views

How can I determine the reason for a failed routing on c-lightning

I am running a c-lightning node (v0.8.2). I am routing a payment every few days. However, I realized that dozens of payments every day fail, many of them fail locally (I see the status 'local_failed' ...
2
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2answers
166 views

Should the nodes of a channel have the same Time Lock Delta?

Consider this channel https://1ml.com/channel/612829298476056576 : Node 1: Caffeine Time Lock Delta: 10 Node 2: HODLcat.com Time Lock Delta: 144 How is an HTLC passing through this ...
3
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0answers
41 views

What is "Link-Level Multiplexing"?

In a discussion about private channels, Conner Fromknecht mentioned a concept called Link-Level Multiplexing. What is this and what is it useful for? How does it work?
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1answer
158 views

Reuse of payment hash in Lightning Network

Suppose there exist two such payment transfer request: A transfers 1 msat to R via A->B->C->R and S transfers 5 msat to R via S->B->C->R. Let the two HTLCs be formed across both the paths ...
0
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1answer
161 views

Transaction size limit across a single path in a Lightning Network and fee earned

Given MPP is included in the current version of lnd, an arbitrarily large transaction can be processed in the network. What is the transaction size limit across a single path? Is it still bounded to 0....
3
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2answers
96 views

Why do multihop LN payments start settling from the recipient's end?

In HTLC, after all the parties have locked their funds in the contract, claiming payment happens in a reverse way, starting with the receiver who reveals the preimage of the corresponding payment hash....
3
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0answers
573 views

LND Port 9735 still closed after setting up port forwarding and firewall

I have set up my bitcoin/lnd full node and would like to have it run as a routing node for the network. So I have opened my port 9735 from the router and allowed access to it in my firewall (ufw on ...
3
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2answers
230 views

What is the rationale for the Lightning network's path length limit (20 hops)?

A sender in the Lightning network can choose a path with up to 20 intermediaries (BOLT4). Tor is another network that uses onion routing for anonymity. However, in Tor all paths have 3 intermediaries,...
3
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1answer
240 views

How does the 'queryroutes' function in lightning's LND calculate the route fees?

I am testing my own routing implementation and for some weird reason a handful of channels reject my payment stating InsufficientFee. The scenario is A -c1-> B -c2-> C whereby Node A is ...
8
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1answer
417 views

What are the downsides of Hodl Invoices?

As far as I understand hodl invoices enable some interesting use cases. However, I heard that they can be detrimental to the network. Is that correct and in what way? Additionally, at a talk at the ...
2
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2answers
202 views

How does lnd make sure it does not reuse the same route twice for a retry after the first payment failed?

Suppose LND node A wants to send a payment to another node D. The pathfind algorithm based on Dijkstra found a route through B and C and initiates the payment. It fails, as B -> C does not have ...
8
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1answer
597 views

How many paths are tried on average before a payment succeeds in Lightning?

In Lightning, the sender can never be sure that a multi-hop payment will go through, as intermediary nodes don't announce the distribution of funds in their channels (only the total capacity). Is ...
3
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1answer
83 views

Finding paths NOT originating from you with lnd

I'm interested in finding paths from senders whose node you don't run to potential receivers. According to https://api.lightning.community/?python#queryroutes , you can do that by specifying the ...
3
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1answer
1k views

How does Lightning Network over TOR work?

I'm interested to understand in detail how the lightning network works over Tor. Implementations like lnd, c-lightning etc. offer an extension which allow running TOR with Lightning. I would like to ...
3
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1answer
181 views

How can I send a payment to myself with lightening to rebalance 2 channels?

I have an active channel with bitstamp with a balance on my side. Bitstamp has an active channel with lightening power users (lpu) with balance on their side (I checked this with lncli queryroutes ...
2
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2answers
487 views

Can I send/receive payments but prevent forwarding payments in Lightning Network?

Say I am using a very computationally constrained device (eg. a sensor) and it uses Lightning Network to send/receive payments. However, being computationally constrained it doesn't want to forward ...
4
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1answer
820 views

What are atomic multi path payments (AMPs) and why/how is it being implemented in Lightning Network?

There has been a lot of discussion and articles around how the implementation of AMP is going to benefit the routing capabilities of Lightning Network. What is the exact issue in the current ...
1
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1answer
92 views

Would proxying a lightning hot-wallet with a lightning cold-wallet make the hot-wallet safer?

(Edit: I realize how Mt.Gox-y the below setup sounds, but I'm coming at it from a "lightning routing problem perspective", not necessarily a straight "bitcoin security perspective"...though...those ...
4
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1answer
747 views

How do I find the nodeid of the node issuing a lightning network invoice?

I recently got an BOLT11 invoice from a store. For example this one: ...
4
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1answer
58 views

Why do Lightning packets include channel ids if forwarding is non-strict?

The onion packets in Lightning, as described in BOLT 4, include short_channel_id's of the channels along the route constructed by the sender. But according to the same spec, the forwarding is non-...
2
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3answers
88 views

Why can't an intermediary Lightning node take (nearly) all fees?

Consider a Lightning payment: Alice wants to pay 100 sat to Dave via two intermediary hops: Alice - Bob - Charlie - Dave. Both Bob and Charlie advertise a fee of 2 sat. Alice sends 104 sat to Bob, ...
1
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1answer
42 views

Can I explicitly specify a path for Lightning payment?

From what I understand, in the current Lightning implementations payments work as follows: calculate best N paths according to some metric (like, total fees); try to perform the payment through the ...
1
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1answer
129 views

Remote node signature for HTLC-success and HTLC-timeout transactions

According to BOLT #3, when constructing a HTLC output in the version of the local node (both received and offered HTLC), it requires that the payment to the local node is locked with CHECKMULTISIG ...
1
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1answer
52 views

How Lightning Networks protect itself from 'Selfish Mining'?

It is a well accepted fact that mining pools do engage in 'selfish mining' by not broadcasting a block to the network when they find a PoW solution, but building on top of that block so as to maximize ...
2
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1answer
97 views

What is correct way to count LN node stats

I am running a LN node. Set up monitoring to collect stats. Now i am wondering, how can i get correct conclusions about what collected information actually is. My question is about forward (...
1
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1answer
101 views

How do new nodes learn the topology of Lightning network?

Lightning nodes store a full network snapshots to calculate routes for outgoing payments. Nodes listen to announcements of new (public) channel openings and constantly update their local snapshots. ...
6
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1answer
158 views

What is the Big-O for LN bandwidth? Can anyone answer this or provide a link to a spec that is sufficient enough for us to calculate it?

When I worked at Google, if someone wanted to deploy a network application they would need to provide a document to the SREs detailing the behaviour of the application at scale in terms of Big-O. Does ...
1
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1answer
918 views

Why is my lighting node not routing any transaction?

I have set up a lighting node months ago using LND under the tor network. My node (Caffeine) looks correctly configured and connected to several channels but it is not routing any transaction. In the ...
2
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2answers
308 views

Lightning LND - Send Payment Both Ways Within Same Channel

Me and my friend are testing Raspibolt running LND 0.6 Beta. We noticed the following problem/limitation: When I opened a channel with him, I could send him payments (via invoice) without any ...
2
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1answer
192 views

How scalable is the current routing implementation for lightning?

What are the weaknesses we face with lightning routing currently? How many nodes do we expect it can handle now? What is being done to make it scale in the future?
0
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1answer
72 views

Does the `HTLC fail` routed back to sender using same path if intermediate node does not have enough capacity?

In the Lightning Network, the intermediate hop between the sender and receiver checks for possible errors(like if it has enough balance). And if there is, it sends an HTLCFail message back to the ...
0
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1answer
155 views

How to backup seed in lightning and give your channel to watchtower

this is followup on question #85475: I have learned in previous question that there is an automatic refund mechanism in case of force closure of a channel, except for some very rare circumstances. I ...
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2answers
210 views

Lightning - Question about force-closures of channels and its impact on recovering funds

Dear Lightning experts, someone mentioned in context with lightning channels the following things, and I would like to ask you if this statements are true, and if yes, is this a problem in a future ...