Wait for link to be created before adding routes over itHEADmain

This fixes an issue where routes fail to be added if the interface is
created by a service, such as WireGuard links.

2 files changed, 12 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 2e436f3..0275656 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rsdsl_netlinklib = { git = "https://github.com/rsdsl/netlinklib.git", version = "0.6.0", features = ["blocking", "rule"] }
+rsdsl_netlinklib = { git = "https://github.com/rsdsl/netlinklib.git", version = "0.6.0", features = ["blocking", "link", "rule"] }
diff --git a/src/main.rs b/src/main.rs
index 0754003..a6901c7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -251,6 +251,13 @@ impl RouteDef {
 
         Ok(())
     }
+
+    fn link(&self) -> &str {
+        match self {
+            Self::V4(r) => &r.link,
+            Self::V6(r) => &r.link,
+        }
+    }
 }
 
 impl fmt::Display for RouteDef {
@@ -842,6 +849,10 @@ fn run() -> Result<(), Error> {
             Err(e) => println!("[warn] del {}: {}", route, e),
         }
 
+        println!("[info] wait for link {}", route.def.link());
+        conn.link_wait_exists(route.def.link().to_string())
+            .map_err(SetupError::from)?;
+
         if !route.delete {
             match route.def.clone().add(&conn) {
                 Ok(_) => println!("[info] add {}", route),