diff --git a/lib/virtual-net/src/host.rs b/lib/virtual-net/src/host.rs
index 0866f1a20f3..4885d81728f 100644
--- a/lib/virtual-net/src/host.rs
+++ b/lib/virtual-net/src/host.rs
@@ -92,7 +92,12 @@ impl VirtualNetworking for LocalNetworking {
         port: Option<u16>,
         dns_server: Option<IpAddr>,
     ) -> Result<Vec<IpAddr>> {
-        tokio::net::lookup_host(host)
+        let host_to_lookup = if host.contains(':') {
+            host.to_string()
+        } else {
+            format!("{}:{}", host, port.unwrap_or(0))
+        };
+        tokio::net::lookup_host(host_to_lookup)
             .await
             .map(|a| a.map(|a| a.ip()).collect::<Vec<_>>())
             .map_err(io_err_into_net_error)