libp2p: add prefer option

1 files changed, 3 insertions, 1 deletions

diff --git a/src/transport/libp2p/mod.rs b/src/transport/libp2p/mod.rs
index f1006e3..0e15a09 100644
--- a/src/transport/libp2p/mod.rs
+++ b/src/transport/libp2p/mod.rs
@@ -45,7 +45,8 @@
 //!
 //! With `--libp2p-ignore`, address ranges are left out (VPNs): not published, not told
 //! peers by identify (`Identifying`), not offered for hole punching, not dialled, and
-//! connections there refused (`Ignoring`).
+//! connections there refused (`Ignoring`). With `--libp2p-prefer`, addresses in the
+//! ranges named come first, where only so many are kept (`Book::preference`).
 //!
 //! With `--libp2p-upnp`, a node asks its router to forward its listen ports (UPnP), and
 //! publishes the router's public address for them with its own (`Book::direct`): then
@@ -239,6 +240,7 @@ impl Libp2pTransport {
         let mut book = Book {
             announced: config.announce,
             ignored: config.ignore.clone(),
+            preferred: config.prefer.clone(),
             serving: config.relay,
             ..Book::default()
         };