[bug]: can't find route through a channel I know about and I can reach its channel peer

[ZZiigguurraatt]

I'm running the LND version found in lightninglabs/lightning-terminal#1097 .

I'm trying to reach node 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43, but can't. I used to be able to before upgrading.

431de8e23386:/$ lncli queryroutes --amt 1 --dest 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43
[lncli] rpc error: code = Unknown desc = unable to find a path to destination
431de8e23386:/$ 

There is a channel that node 0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208 has with 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43 that I know about.

431de8e23386:/$ lncli getchaninfo --chan_point 526923e998077ebad0d9ba02832b5cd5e1be7b5e157d087335e66ed2ae090fb9:0
{
    "channel_id": "442003674431488",
    "chan_point": "526923e998077ebad0d9ba02832b5cd5e1be7b5e157d087335e66ed2ae090fb9:0",
    "last_update": 1752001791,
    "node1_pub": "02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43",
    "node2_pub": "0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208",
    "capacity": "5000000",
    "node1_policy": {
        "time_lock_delta": 80,
        "min_htlc": "1000",
        "fee_base_msat": "1000",
        "fee_rate_milli_msat": "1",
        "disabled": false,
        "max_htlc_msat": "4950000000",
        "last_update": 1752001788,
        "custom_records": {},
        "inbound_fee_base_msat": 0,
        "inbound_fee_rate_milli_msat": 0
    },
    "node2_policy": {
        "time_lock_delta": 80,
        "min_htlc": "1000",
        "fee_base_msat": "1000",
        "fee_rate_milli_msat": "1",
        "disabled": false,
        "max_htlc_msat": "4950000000",
        "last_update": 1752001791,
        "custom_records": {},
        "inbound_fee_base_msat": 0,
        "inbound_fee_rate_milli_msat": 0
    },
    "custom_records": {},
    "auth_proof": null
}
431de8e23386:/$ 

I can route to 0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208

431de8e23386:/$ lncli queryroutes --amt 1 --dest 0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208
{
    "routes": [
        {
            "total_time_lock": 874,
            "total_fees": "1",
            "total_amt": "2",
            "hops": [
                {
                    "chan_id": "387028093042688",
                    "chan_capacity": "100000",
                    "amt_to_forward": "1",
                    "fee": "1",
                    "expiry": 794,
                    "amt_to_forward_msat": "1000",
                    "fee_msat": "1000",
                    "pub_key": "03712a62dc9022079983aab1fbdfc166b6fef23ca3ab9bfaf0719dfe91dbe2498f",
                    "tlv_payload": true,
                    "mpp_record": null,
                    "amp_record": null,
                    "custom_records": {},
                    "metadata": "",
                    "blinding_point": "",
                    "encrypted_data": "",
                    "total_amt_msat": "0"
                },
                {
                    "chan_id": "398023209320448",
                    "chan_capacity": "5000000",
                    "amt_to_forward": "1",
                    "fee": "0",
                    "expiry": 794,
                    "amt_to_forward_msat": "1000",
                    "fee_msat": "0",
                    "pub_key": "0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208",
                    "tlv_payload": true,
                    "mpp_record": null,
                    "amp_record": null,
                    "custom_records": {},
                    "metadata": "",
                    "blinding_point": "",
                    "encrypted_data": "",
                    "total_amt_msat": "0"
                }
            ],
            "total_fees_msat": "1000",
            "total_amt_msat": "2000",
            "first_hop_amount_msat": "0",
            "custom_channel_data": ""
        }
    ],
    "success_prob": 1
}
431de8e23386:/$ 

therefor, I think I should be able to reach 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43 .

Is there some more troubleshooting I can do to figure out why a route can't be found?

[ZZiigguurraatt]

Here is some more information about 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43

431de8e23386:/$ lncli getnodeinfo --include_channels 02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43
{
    "node": {
        "last_update": 1752000653,
        "pub_key": "02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43",
        "alias": "02cfdbb9872fae741c2d",
        "addresses": [],
        "color": "#3399ff",
        "features": {
            "0": {
                "name": "data-loss-protect",
                "is_required": true,
                "is_known": true
            },
            "5": {
                "name": "upfront-shutdown-script",
                "is_required": false,
                "is_known": true
            },
            "7": {
                "name": "gossip-queries",
                "is_required": false,
                "is_known": true
            },
            "8": {
                "name": "tlv-onion",
                "is_required": true,
                "is_known": true
            },
            "12": {
                "name": "static-remote-key",
                "is_required": true,
                "is_known": true
            },
            "14": {
                "name": "payment-addr",
                "is_required": true,
                "is_known": true
            },
            "17": {
                "name": "multi-path-payments",
                "is_required": false,
                "is_known": true
            },
            "19": {
                "name": "wumbo-channels",
                "is_required": false,
                "is_known": true
            },
            "23": {
                "name": "anchors-zero-fee-htlc-tx",
                "is_required": false,
                "is_known": true
            },
            "25": {
                "name": "route-blinding",
                "is_required": false,
                "is_known": true
            },
            "27": {
                "name": "shutdown-any-segwit",
                "is_required": false,
                "is_known": true
            },
            "31": {
                "name": "amp",
                "is_required": false,
                "is_known": true
            },
            "45": {
                "name": "explicit-commitment-type",
                "is_required": false,
                "is_known": true
            },
            "47": {
                "name": "scid-alias",
                "is_required": false,
                "is_known": true
            },
            "51": {
                "name": "zero-conf",
                "is_required": false,
                "is_known": true
            },
            "55": {
                "name": "keysend",
                "is_required": false,
                "is_known": true
            },
            "61": {
                "name": "rbf-coop-close",
                "is_required": false,
                "is_known": true
            },
            "161": {
                "name": "rbf-coop-close-x",
                "is_required": false,
                "is_known": true
            },
            "181": {
                "name": "simple-taproot-chans-x",
                "is_required": false,
                "is_known": true
            },
            "261": {
                "name": "endorsement-x",
                "is_required": false,
                "is_known": true
            },
            "2023": {
                "name": "script-enforced-lease",
                "is_required": false,
                "is_known": true
            },
            "2025": {
                "name": "taproot-overlay-chans",
                "is_required": false,
                "is_known": true
            }
        },
        "custom_records": {}
    },
    "num_channels": 3,
    "total_capacity": "15000000",
    "channels": [
        {
            "channel_id": "442003674431488",
            "chan_point": "526923e998077ebad0d9ba02832b5cd5e1be7b5e157d087335e66ed2ae090fb9:0",
            "last_update": 1752001791,
            "node1_pub": "02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43",
            "node2_pub": "0305011de51793582fe9dab5c6f56903f676899e4e93a457bfe3e35cab66bde208",
            "capacity": "5000000",
            "node1_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1752001788,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "node2_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1752001791,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "custom_records": {},
            "auth_proof": null
        },
        {
            "channel_id": "485984139542528",
            "chan_point": "393cbdc29cf2278a2f8216bc61f4537302d7e511447dc14dd48392a9da014a2a:0",
            "last_update": 1752001789,
            "node1_pub": "0295ae66889925ad2c2b8b7e606100f6bcb80debc3a153386b2008be59c70487d6",
            "node2_pub": "02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43",
            "capacity": "5000000",
            "node1_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1752001789,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "node2_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1751986165,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "custom_records": {},
            "auth_proof": null
        },
        {
            "channel_id": "507974372098048",
            "chan_point": "5385a8642b3e9a426969ef8f0375b96e9c398fb79f06b8821a2b788042919549:0",
            "last_update": 1752001789,
            "node1_pub": "0204f1607a66536b1d38957955db27c7686429d8f40f8e7a98880a5eac4b766d9d",
            "node2_pub": "02cfdbb9872fae741c2da1c8e43191a6736be23d01875b14e1c4344a6958001f43",
            "capacity": "5000000",
            "node1_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1752001789,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "node2_policy": {
                "time_lock_delta": 80,
                "min_htlc": "1000",
                "fee_base_msat": "1000",
                "fee_rate_milli_msat": "1",
                "disabled": false,
                "max_htlc_msat": "4950000000",
                "last_update": 1751986167,
                "custom_records": {},
                "inbound_fee_base_msat": 0,
                "inbound_fee_rate_milli_msat": 0
            },
            "custom_records": {},
            "auth_proof": null
        }
    ]
}
431de8e23386:/$ 

[ZZiigguurraatt]

I restarted my network and the problem went away with those nodes but it re-manifested itself with another set of nodes in the network.

[yyforyongyu]

This seems to be related to #10039 and #9912. Do you have debug logs to share?

[ZZiigguurraatt]

I restarted my network and the problem went away with those nodes but it re-manifested itself with another set of nodes in the network.

I've tried restarting the nodes again several times and it seems to be sticking with the same problem set of nodes for now.

[ZZiigguurraatt]

This seems to be related to #10039 and #9912. Do you have debug logs to share?

I'm not getting insufficient balance errors, just no route errors.

I'm not trying to use zero-conf channels.

Are you wanting debug logs from node startup or when it tries to do lncli queryroutes?

[ZZiigguurraatt]

Note: I erased my network and re-built it, so now I have new node public keys.

Okay, so I ran

lncli queryroutes --fee_limit 10 --amt 1 --dest 032b0e3c062713c4ad4f08cda83ea182eae11bfd3d8adaf816020d1347d9a35d1d

and here is the debug output

2025-07-09 14:14:39.719 [INF] LITD: Handling gRPC request: /lnrpc.Lightning/QueryRoutes
2025-07-09 14:14:39.720 [DBG] RPCS: [/lnrpc.Lightning/QueryRoutes] requested
2025-07-09 14:14:39.720 [DBG] CRTR: Searching for path to 032b0e3c062713c4ad4f08cda83ea182eae11bfd3d8adaf816020d1347d9a35d1d, sending 1000 mSAT
2025-07-09 14:14:39.721 [DBG] TSVR: HandleTraffic called, cid=402:1:0, fundingBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}
, htlcBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}

2025-07-09 14:14:39.721 [DBG] HSWC: ShortChannelID=402:1:0: aux traffic shaper is handling traffic: false
2025-07-09 14:14:39.721 [DBG] TSVR: HandleTraffic called, cid=442:1:0, fundingBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}
, htlcBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}

2025-07-09 14:14:39.721 [DBG] HSWC: ShortChannelID=442:1:0: aux traffic shaper is handling traffic: false
2025-07-09 14:14:39.721 [DBG] TSVR: HandleTraffic called, cid=462:1:0, fundingBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}
, htlcBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}

2025-07-09 14:14:39.721 [DBG] HSWC: ShortChannelID=462:1:0: aux traffic shaper is handling traffic: false
2025-07-09 14:14:39.722 [DBG] TSVR: HandleTraffic called, cid=572:1:0, fundingBlob=(fn.Option[[]uint8]) {
 isSome: (bool) true,
 some: ([]uint8) (len=1780 cap=1780) {
  00000000  00 fd 06 ca 01 fd 06 c6  00 20 a4 bc 93 c5 7c 4d  |......... ....|M|
  00000010  0d 94 ac 26 6e cd ba 0b  31 b4 46 b8 df a6 4d ed  |...&n...1.F...M.|
  00000020  98 b0 47 7a 54 4a 56 c5  6c a2 01 08 00 00 00 00  |..GzTJV.l.......|
  00000030  0b eb c2 00 02 fd 06 96  54 41 50 50 00 04 00 00  |........TAPP....|
  00000040  00 00 02 24 11 97 6e bc  af ec 87 9b 16 79 d3 a3  |...$..n......y..|
  00000050  f3 d3 e5 49 f0 bc 82 9e  44 a4 42 a4 15 98 4c 85  |...I....D.B...L.|
  00000060  03 89 43 59 00 00 00 01  04 50 00 00 00 00 00 00  |..CY.....P......|
  00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000080  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000090  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 09  |................|
  000000b0  6e 88 00 00 00 00 00 00  00 00 06 dd 02 00 00 00  |n...............|
  000000c0  02 11 97 6e bc af ec 87  9b 16 79 d3 a3 f3 d3 e5  |...n......y.....|
  000000d0  49 f0 bc 82 9e 44 a4 42  a4 15 98 4c 85 03 89 43  |I....D.B...L...C|
  000000e0  59 01 00 00 00 00 00 00  00 00 04 b3 2d 95 a5 43  |Y...........-..C|
  000000f0  64 75 79 7e 3a bc 3f ab  c5 77 bf d1 e3 33 a5 36  |duy~:.?..w...3.6|
  00000100  74 e5 e1 42 45 24 54 ba  5e ff 01 00 00 00 00 00  |t..BE$T.^.......|
  00000110  00 00 00 03 a0 86 01 00  00 00 00 00 22 51 20 88  |............"Q .|
  00000120  ec 64 03 e9 06 9a c6 e2  1f fb 3d 2c 96 02 81 c3  |.d........=,....|
  00000130  fd 93 59 f8 27 30 15 59  ba b4 ba 19 2b 6d 08 e8  |..Y.'0.Y....+m..|
  00000140  03 00 00 00 00 00 00 22  51 20 bf a2 ad 73 30 f7  |......."Q ...s0.|
  00000150  78 a6 fb b9 26 fc 97 07  5b dc 23 ac 66 ad b3 a1  |x...&...[.#.f...|
  00000160  e1 10 bc 41 a6 39 d9 3f  33 28 7c ad 5b 05 00 00  |...A.9.?3(|.[...|
  00000170  00 00 22 51 20 91 9d f2  6c 31 6d 74 16 d7 6e 31  |.."Q ...l1mt..n1|
  00000180  e6 21 f9 58 6c 27 0d e0  fe 82 9c d9 a1 b8 d8 64  |.!.Xl'.........d|
  00000190  cf a0 b7 13 21 00 00 00  00 08 01 00 0a fd 02 ec  |....!...........|
  000001a0  00 01 01 02 50 c2 89 ee  be 81 25 60 7a 6c 42 df  |....P.....%`zlB.|
  000001b0  98 17 be 4f 26 32 a4 25  0c 28 e4 c1 d5 40 06 f1  |...O&2.%.(...@..|
  000001c0  e8 cc 27 a7 95 00 00 00  00 06 41 73 73 65 74 31  |..'.......Asset1|
  000001d0  82 7c 23 a4 b1 a5 f4 f9  a9 a4 2e 61 aa 7b f7 bf  |.|#........a.{..|
  000001e0  7e 79 25 b4 72 37 28 b6  0a d1 91 8d 63 2e 2b 0a  |~y%.r7(.....c.+.|
  000001f0  00 00 00 00 00 04 01 00  06 05 fe 0b eb c2 00 0b  |................|
  00000200  fd 02 3f 01 fd 02 3b 01  65 00 00 00 00 00 00 00  |..?...;.e.......|
  00000210  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000220  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000230  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000240  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000250  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  00000260  00 00 00 00 00 00 00 00  00 00 00 00 00 00 05 fd  |................|
  00000270  01 d0 4a 00 01 aa e2 10  98 09 2e eb e2 c0 41 9d  |..J...........A.|
  00000280  7f 12 30 3c 7f 95 35 cb  39 60 9b 21 d1 05 b5 c7  |..0<..5.9`.!....|
  00000290  b1 b1 4a 6b bf 00 00 00  00 11 e1 a3 00 ff ff ff  |..Jk............|
  000002a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  000002b0  ff ff ff ff ff ff ff ff  ff ff ff ff 7f fd 01 82  |................|
  000002c0  00 01 00 02 50 c2 89 ee  be 81 25 60 7a 6c 42 df  |....P.....%`zlB.|
  000002d0  98 17 be 4f 26 32 a4 25  0c 28 e4 c1 d5 40 06 f1  |...O&2.%.(...@..|
  000002e0  e8 cc 27 a7 95 00 00 00  00 06 41 73 73 65 74 31  |..'.......Asset1|
  000002f0  82 7c 23 a4 b1 a5 f4 f9  a9 a4 2e 61 aa 7b f7 bf  |.|#........a.{..|
  00000300  7e 79 25 b4 72 37 28 b6  0a d1 91 8d 63 2e 2b 0a  |~y%.r7(.....c.+.|
  00000310  00 00 00 00 00 04 01 00  06 05 fe 11 e1 a3 00 0b  |................|
  00000320  ad 01 ab 01 65 11 97 6e  bc af ec 87 9b 16 79 d3  |....e..n......y.|
  00000330  a3 f3 d3 e5 49 f0 bc 82  9e 44 a4 42 a4 15 98 4c  |....I....D.B...L|
  00000340  85 03 89 43 59 00 00 00  01 a4 bc 93 c5 7c 4d 0d  |...CY........|M.|
  00000350  94 ac 26 6e cd ba 0b 31  b4 46 b8 df a6 4d ed 98  |..&n...1.F...M..|
  00000360  b0 47 7a 54 4a 56 c5 6c  a2 02 f0 f2 b8 58 86 17  |.GzTJV.l.....X..|
  00000370  e7 45 16 c6 98 1d c5 c6  63 fe 6c 57 d8 3f 3f c8  |.E......c.lW.??.|
  00000380  15 1f b7 aa 9b 94 63 ec  16 e2 03 42 01 40 93 df  |......c....B.@..|
  00000390  60 02 40 8e 90 2c 68 35  3e 39 11 66 85 a2 3d 99  |`.@..,h5>9.f..=.|
  000003a0  6d 3b b6 56 e9 d5 ad 32  65 98 3e 83 a4 2d 63 51  |m;.V...2e.>..-cQ|
  000003b0  1c 9f 16 b0 1a 7c 5b 58  f4 20 ae a9 56 7a dc fd  |.....|[X. ..Vz..|
  000003c0  d6 c5 90 0c 76 ec 7b e0  17 21 54 21 53 73 0d 28  |....v.{..!T!Ss.(|
  000003d0  58 a0 83 d9 a0 3a 5b c1  f6 1b 5a 0f 53 8c dc 80  |X....:[...Z.S...|
  000003e0  89 d6 98 0f 5f 7f 37 3c  17 b2 de b8 6f 64 48 2f  |...._.7<....odH/|
  000003f0  00 00 00 00 1d cd 65 00  0e 02 00 00 10 21 02 b8  |......e......!..|
  00000400  cd 1b 43 fb 55 cf ac 02  a8 6b 94 05 75 0d 0e 31  |..C.U....k..u..1|
  00000410  22 7c 83 81 e3 2f 11 cc  58 74 83 61 c2 c1 d2 11  |"|.../..Xt.a....|
  00000420  21 03 89 5e 4d 86 a2 91  91 fd ef 26 22 30 8e 61  |!..^M......&"0.a|
  00000430  51 d2 6a 52 1d e1 2d fd  da a9 f2 b4 ef f7 4e 2a  |Q.jR..-.......N*|
  00000440  c2 d6 0e 02 00 00 10 21  02 50 aa eb 16 6f 42 34  |.......!.P...oB4|
  00000450  65 0d 84 a2 d8 a1 30 98  7a ea f6 95 02 06 e0 90  |e.....0.z.......|
  00000460  54 01 ee 74 ff 3f 8d 18  e6 11 21 03 89 5e 4d 86  |T..t.?....!..^M.|
  00000470  a2 91 91 fd ef 26 22 30  8e 61 51 d2 6a 52 1d e1  |.....&"0.aQ.jR..|
  00000480  2d fd da a9 f2 b4 ef f7  4e 2a c2 d6 0c 9f 00 04  |-.......N*......|
  00000490  00 00 00 00 02 21 02 d1  0d 52 4e ff 9d 2a 5a 11  |.....!...RN..*Z.|
  000004a0  54 3b d6 bc 99 65 7d 9e  ff 66 7f bb 46 e2 1e c9  |T;...e}..f..F...|
  000004b0  73 e3 90 18 b8 e8 62 03  74 01 49 00 01 01 02 20  |s.....b.t.I.... |
  000004c0  98 ae fc 99 72 82 e5 a2  a2 ec 80 e1 62 d1 2b 15  |....r.......b.+.|
  000004d0  ac d5 22 a6 8d 12 c6 53  b8 ff 1c 8b 59 92 fb c6  |.."....S....Y...|
  000004e0  04 22 00 00 ff ff ff ff  ff ff ff ff ff ff ff ff  |."..............|
  000004f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  00000500  ff ff ff ff 02 27 00 01  02 02 22 00 00 ff ff ff  |.....'....".....|
  00000510  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  00000520  ff ff ff ff ff ff ff ff  ff ff ff ff ff 0d f8 02  |................|
  00000530  c7 00 04 00 00 00 01 02  21 03 95 40 95 3b 6b 59  |........!..@.;kY|
  00000540  72 33 25 4c fa 49 37 db  cc 29 70 ca b9 53 b2 33  |r3%L.I7..)p..S.3|
  00000550  b4 af af 4f 79 0c 1b e0  36 c5 03 9c 01 71 00 01  |...Oy...6....q..|
  00000560  00 02 20 98 ae fc 99 72  82 e5 a2 a2 ec 80 e1 62  |.. ....r.......b|
  00000570  d1 2b 15 ac d5 22 a6 8d  12 c6 53 b8 ff 1c 8b 59  |.+..."....S....Y|
  00000580  92 fb c6 04 4a 00 01 61  01 ea 63 5d 7a 15 3e ed  |....J..a..c]z.>.|
  00000590  f0 ee 38 48 e4 c6 c0 2a  b1 13 0b 90 6a 91 20 f5  |..8H...*....j. .|
  000005a0  5b 4e f7 cd db 3d 18 00  00 00 00 11 e1 a3 00 ff  |[N...=..........|
  000005b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  000005c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff 7f 02  |................|
  000005d0  27 00 01 02 02 22 00 00  ff ff ff ff ff ff ff ff  |'...."..........|
  000005e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  000005f0  ff ff ff ff ff ff ff ff  2e 00 04 00 00 00 02 02  |................|
  00000600  21 02 16 0e 53 f8 a6 a1  43 b9 ff d4 ee 3e cc 1f  |!...S...C....>..|
  00000610  d2 a5 03 e5 e0 42 4f 7b  ee f2 eb 22 fc 11 72 69  |.....BO{..."..ri|
  00000620  05 20 05 03 04 01 01 0f  9f 00 04 00 00 00 01 02  |. ..............|
  00000630  21 03 95 40 95 3b 6b 59  72 33 25 4c fa 49 37 db  |!..@.;kYr3%L.I7.|
  00000640  cc 29 70 ca b9 53 b2 33  b4 af af 4f 79 0c 1b e0  |.)p..S.3...Oy...|
  00000650  36 c5 03 74 01 49 00 01  00 02 20 98 ae fc 99 72  |6..t.I.... ....r|
  00000660  82 e5 a2 a2 ec 80 e1 62  d1 2b 15 ac d5 22 a6 8d  |.......b.+..."..|
  00000670  12 c6 53 b8 ff 1c 8b 59  92 fb c6 04 22 00 00 ff  |..S....Y...."...|
  00000680  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  00000690  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff 02  |................|
  000006a0  27 00 01 02 02 22 00 00  ff ff ff ff ff ff ff ff  |'...."..........|
  000006b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
  000006c0  ff ff ff ff ff ff ff ff  16 04 00 00 00 00 01 01  |................|
  000006d0  03 02 21 03 89 5e 4d 86  a2 91 91 fd ef 26 22 30  |..!..^M......&"0|
  000006e0  8e 61 51 d2 6a 52 1d e1  2d fd da a9 f2 b4 ef f7  |.aQ.jR..-.......|
  000006f0  4e 2a c2 d6                                       |N*..|
 }
}
, htlcBlob=(fn.Option[[]uint8]) {
 isSome: (bool) false,
 some: ([]uint8) <nil>
}

2025-07-09 14:14:39.722 [DBG] HSWC: ShortChannelID=572:1:0: aux traffic shaper is handling traffic: false
2025-07-09 14:14:39.722 [DBG] CRTR: Pathfinding absolute attempt cost: 100.001 sats
2025-07-09 14:14:39.722 [DBG] CRTR: Skipped adding edge 420013441875968 due to nil policy
2025-07-09 14:14:39.722 [DBG] CRTR: Pathfinding perf metrics: nodes=1, edges=0, time=734.812µs
2025-07-09 14:14:39.722 [ERR] RPCS: [/lnrpc.Lightning/QueryRoutes]: unable to find a path to destination

Then I run

e8dac4b9f5f2:/$ lncli getnodeinfo --include_channels 032b0e3c062713c4ad4f08cda83ea182eae11bfd3d8adaf816020d1347d9a35d1d
{
    "node": {
        "last_update": 0,
        "pub_key": "032b0e3c062713c4ad4f08cda83ea182eae11bfd3d8adaf816020d1347d9a35d1d",
        "alias": "",
        "addresses": [],
        "color": "#000000",
        "features": {},
        "custom_records": {}
    },
    "num_channels": 1,
    "total_capacity": "5000000",
    "channels": [
        {
            "channel_id": "420013441875968",
            "chan_point": "b75e3af5137c82dee6db8874d8680dced935197c8e0bdc33f6d229eeaf8f55f6:0",
            "last_update": 0,
            "node1_pub": "02a477f984f73b667dafb72ed7a988ec9743b03bcc8fb339f49f4a934ad4014d82",
            "node2_pub": "032b0e3c062713c4ad4f08cda83ea182eae11bfd3d8adaf816020d1347d9a35d1d",
            "capacity": "5000000",
            "node1_policy": null,
            "node2_policy": null,
            "custom_records": {},
            "auth_proof": null
        }
    ]
}
e8dac4b9f5f2:/$ 

and find that 420013441875968 is the channel I wanted to get a route through.

So, I'm not sure why it is saying Skipped adding edge 420013441875968 due to nil policy.

[ziggie1984]

you are missing the node_announment of this node so somehow the other node did not sent it.

The feature field is empty and when paying we check if it supports MPP for example.

[ZZiigguurraatt]

you are missing the node_announment of this node so somehow the other node did not sent it.

The feature field is empty and when paying we check if it supports MPP for example.

So, without node_announment how do I even know about the channel at all?

What else comes with node_announment besides the feature field?

How would I go about forcing node_announment to be sent? Does it come directly from the node or do I get it through gossip from a third party node?

[Roasbeef]

Then I run

That shows that you actually don't have the channel_update for that peer. If you don't have a channel update, then you can't route over a channel.

[ziggie1984]

So, without node_announment how do I even know about the channel at all?

What else comes with node_announment besides the feature field?

How would I go about forcing node_announment to be sent? Does it come directly from the node or do I get it through gossip from a third party node?

Given your log dump it has neither the node announcment nor the channel updates, could you investiage your logs whether they were sent in the first place when the channel got enough confirmations ?

Normally a node always resends its nodeannounments in think once every 24 hours but i have to check, you should set your whole node to the log level "debug" so we can later understand what happened in detail (in case you can reproduce it)

[ZZiigguurraatt]

Normally a node always resends its nodeannounments in think once every 24 hours but i have to check

do mainnet and regtest have the same frequency for the resends?