[bug]: No bootstrap nodes for Bitcoin testnet4 ?

[pbraun9]

LND here is up against testnet4 but shows following error

2025-06-13 21:45:52.780 [INF] DISC: Attempting to bootstrap with: Authenticated Channel Graph
2025-06-13 21:45:52.780 [ERR] SRVR: Unable to retrieve initial bootstrap peers: no addresses found

I am behind multiple NATs but that shouldn't prevent me from reaching the LND seeding nodes right?
I can reach some LND seeding nodes on 9735/tcp against test.nodes.lightning.directory.
Question is, are those only for legacy testnet or also offering testnet4?
Are there testnet4 LND seeding public nodes?

I have bitcoind as backend and it's in sync (progress=1).

lnd version 0.19.0-beta commit=v0.19.0-beta
Ubuntu jammy -- Linux alpha15 5.15.0-139-generic #149-Ubuntu SMP Fri Apr 11 22:06:13 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Bitcoin Core version v28.1.0

Here's my config for Bitcoind

testnet4=1
txindex=1
coinstatsindex=1
blockfilterindex=1

server=1
daemon=1
zmqpubrawblock=tcp://192.168.0.x:28332
zmqpubrawtx=tcp://192.168.0.x:28333
rpcuser=REPLACEME
rpcpassword=REPLACEME

and for LND

[Application Options]
# trace debug info warn error critical
debuglevel=info
listen=0.0.0.0:9735

# advertise your node
#externalip=x.x.x.x

[Bitcoin]
bitcoin.active=true
bitcoin.testnet4=true
bitcoin.node=bitcoind

[Bitcoind]
bitcoind.rpchost=127.0.0.1
bitcoind.rpcuser=REPLACEME
bitcoind.rpcpass=REPLACEME
bitcoind.zmqpubrawblock=tcp://192.168.0.x:28332
bitcoind.zmqpubrawtx=tcp://192.168.0.x:28333

[calvinrzachman]

The current lightning seed service doesn't support testnet4. We're making some deployment changes to the service and plan to include testnet4 support along side those changes. Should have that added relatively soon. Can ping back here when it's operational.