From 6b968663bee696847a160a7bf77527d3a18ba3b7 Mon Sep 17 00:00:00 2001
From: Jeffrey Czyz <jkczyz@gmail.com>
Date: Fri, 13 Oct 2023 17:10:27 -0500
Subject: [PATCH] f - check if the Offer supports the chain

---
 lightning/src/ln/channelmanager.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lightning/src/ln/channelmanager.rs b/lightning/src/ln/channelmanager.rs
index 41a38be4f37..92ab08db6d6 100644
--- a/lightning/src/ln/channelmanager.rs
+++ b/lightning/src/ln/channelmanager.rs
@@ -7171,6 +7171,10 @@ where
 		let entropy = &*self.entropy_source;
 		let secp_ctx = &self.secp_ctx;
 
+		if !offer.supports_chain(self.chain_hash) {
+			return Err(Bolt12SemanticError::UnsupportedChain);
+		}
+
 		let builder = offer.request_invoice_deriving_payer_id(
 			expanded_key, entropy, secp_ctx, payment_id
 		)?;