initialize basic socket

holo-vrrp/Cargo.toml

@@ -24,6 +24,8 @@ serde_with.workspace = true
 tokio.workspace = true
 tracing.workspace = true
 yang2.workspace = true
+socket2.workspace = true
+capctl.workspace = true
 
 holo-northbound = { path = "../holo-northbound" }
 holo-protocol = { path = "../holo-protocol" }
@@ -41,3 +43,5 @@ workspace = true
 [features]
 default = []
 testing = []
+
+

holo-vrrp/src/network.rs

@@ -4,4 +4,20 @@
 // SPDX-License-Identifier: MIT
 //
 
-// TODO
+use libc::ETH_P_ALL;
+use socket2::{Socket, Domain, Type, Protocol};
+use capctl::caps;
+use holo_utils::capabilities;
+
+fn socket() -> Result<Socket, std::io::Error> {
+    let socket = capabilities::raise(|| {
+        Socket::new(
+            Domain::IPV4,
+            Type::RAW,
+            Some(Protocol::from(112))
+        )
+    })?;
+
+    socket.set_broadcast(true);
+    Ok(socket)
+}