f allow any witness script output from counterparty

Author: dunxen

lightning/src/ln/interactivetxs.rs

@@ -233,9 +233,13 @@ impl NegotiationContext {
 			return Err(AbortReason::ExceededMaximumSatsAllowed);
 		}
 
-		// The receiving node:
+		// According to the current spec, a receiving node:
 		//   - MUST accept P2WSH, P2WPKH, P2TR scripts
 		//   - MAY fail the negotiation if script is non-standard
+		//
+		// However, all witness scripts are standard now, and we don't really care if the sender
+		// wants to add an output with a witness V2+ script that could be spent by anyone.
+		// That's none of our business really ¯\_(ツ)_/¯
 		if !msg.script.is_v0_p2wpkh() && !msg.script.is_v0_p2wsh() && !msg.script.is_v1_p2tr() {
 			return Err(AbortReason::InvalidOutputScript);
 		}