Avoid treating option_upfront_shutdown (req) as unknown_required.

This fixes the bitmask in requires_unknown_bits.

diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs
index dd0b7fa1a82aba540a259bd18ede2b5156c9eef1..d7e0299e8876143b09a2052d6380c842a257b827 100644 (file)
--- a/lightning/src/ln/features.rs
+++ b/lightning/src/ln/features.rs
@@ -187,7 +187,7 @@ impl<T: sealed::Context> Features<T> {
        pub(crate) fn requires_unknown_bits(&self) -> bool {
                self.flags.iter().enumerate().any(|(idx, &byte)| {
                        (match idx {
-                               0 => (byte & 0b00010100),
+                               0 => (byte & 0b01000100),
                                1 => (byte & 0b01010100),
                                _ => (byte & 0b01010101),
                        }) != 0