LND shuts down if tor.skip-proxy-for-clearnet-targets is enabled

[deafboy]

Background

When option tor.skip-proxy-for-clearnet-targets is set to true, LND shuts down after wallet is unocked.

Your environment

• v0.14.0
• Ubuntu 18.04
• btcd 1.3.0

Steps to reproduce

set tor.skip-proxy-for-clearnet-targets=true
start LND
unlock wallet

tor related conf:

[tor]
tor.active=true
tor.socks=9050
#tor.dns=nodes.lightning.directory
tor.streamisolation=true
tor.control=localhost:9051
tor.v3=true
tor.skip-proxy-for-clearnet-targets=true
#tor.directconnections=true
#tor.dns=nodes.lightning.directory

Actual behaviour

[bitcoin@lnd ~]$ lncli unlock && tail -f .lnd/logs/bitcoin/mainnet/lnd.log
Input wallet password: 

lnd successfully unlocked!
2021-11-19 11:50:06.105 [INF] CHDB: Not compacting database file at /home/bitcoin/.lnd/data/graph/mainnet/channel.db, it was last compacted at 2021-11-15 12:40:07.65350925 +0100 CET (95h9m58s ago), min age is set to 168h0m0s
2021-11-19 11:50:06.574 [INF] CHDB: Not compacting database file at /home/bitcoin/.lnd/data/chain/bitcoin/mainnet/macaroons.db, it was last compacted at 2021-11-19 11:47:08.522229478 +0100 CET (2m58s ago), min age is set to 168h0m0s
2021-11-19 11:50:06.574 [INF] CHDB: Not compacting database file at /home/bitcoin/.lnd/data/graph/mainnet/sphinxreplay.db, it was last compacted at 2021-11-15 12:40:35.594800489 +0100 CET (95h9m30s ago), min age is set to 168h0m0s
2021-11-19 11:50:06.633 [INF] LTND: Creating local graph and channel state DB instances
2021-11-19 11:50:09.255 [INF] CHDB: Checking for schema update: latest_version=24, db_version=24
2021-11-19 11:50:09.255 [INF] LTND: Database(s) now open (time_to_open=3.150344391s)!
2021-11-19 11:50:09.256 [INF] LTND: We're not running within systemd
2021-11-19 11:50:09.256 [INF] LTND: Waiting for wallet encryption password. Use `lncli create` to create a wallet, `lncli unlock` to unlock an existing wallet, or `lncli changepassword` to change the password of an existing wallet and unlock it.
2021-11-19 11:50:24.309 [INF] LNWL: Opened wallet
2021-11-19 11:50:24.401 [INF] CHRE: Primary chain is set to: bitcoin
2021-11-19 11:50:24.414 [INF] CHRE: Initializing btcd backed fee estimator
2021-11-19 11:50:25.223 [INF] LNWL: The wallet has been unlocked without a time limit
2021-11-19 11:50:25.242 [INF] CHRE: LightningWallet opened
2021-11-19 11:50:25.255 [INF] LTND: Shutdown complete

^C
[bitcoin@lnd ~]$

[guggero]

I think the actual error is being swallowed here. Not sure if the tor.skip-proxy-for-clearnet-targets=true setting really is the culprit. Do you have the stdout of lnd somewhere? Perhaps systemd? There the actual error should be logged (hopefully).

[deafboy]

You're right.

2021-11-19 12:49:06.067 [INF] CHRE: LightningWallet opened
2021-11-19 12:49:06.094 [INF] LTND: Shutdown complete

while stream isolation is enabled, the TOR proxy may not be skipped

[guggero]

Right, that makes sense that stream isolation (=no traffic correlation, even when encrypted) and skip proxy for clearnet (=send everything you can over clearnet) don't go together, as they're on complete opposites of the privacy concern spectrum.

Closing as this is a configuration issue.