Merge pull request #7609 from Roasbeef/80-block-cltv

chainreg: increase default CLTV value to 80 blocks (~13 hrs)

chainreg/chainregistry.go

@@ -128,7 +128,7 @@ const (
 
 	// DefaultBitcoinTimeLockDelta is the default forwarding time lock
 	// delta.
-	DefaultBitcoinTimeLockDelta = 40
+	DefaultBitcoinTimeLockDelta = 80
 
 	DefaultLitecoinMinHTLCInMSat  = lnwire.MilliSatoshi(1)
 	DefaultLitecoinMinHTLCOutMSat = lnwire.MilliSatoshi(1000)

docs/release-notes/release-notes-0.16.1.md

@@ -1,5 +1,10 @@
 # Release Notes
 
+## Routing
+
+* The default CLTV delta delay [has been increased from 40 blocks to 80
+  blocks](https://github.com/lightningnetwork/lnd/pull/7609).
+
 ## Wallet
 
 - The logging around transaction broadcast failures [has been improved by always

sample-lnd.conf

@@ -532,7 +532,7 @@ bitcoin.node=btcd
 ; bitcoin.feerate=1
 
 ; The CLTV delta we will subtract from a forwarded HTLC's timelock value.
-; bitcoin.timelockdelta=40
+; bitcoin.timelockdelta=80
 
 ; The seed DNS server(s) to use for initial peer discovery. Must be specified as
 ; a '<primary_dns>[,<soa_primary_dns>]' tuple where the SOA address is needed