extend x-platform support for binding URL previews to interfaces via address

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/config/check.rs

@@ -1,3 +1,6 @@
+use std::env::consts::OS;
+
+use either::Either;
 use figment::Figment;
 
 use super::DEPRECATED_KEYS;
@@ -191,6 +194,15 @@ For security and safety reasons, conduwuit will shut down. If you are extra sure
 		);
 	}
 
+	if let Some(Either::Right(_)) = config.url_preview_bound_interface.as_ref() {
+		if !matches!(OS, "android" | "fuchsia" | "linux") {
+			return Err!(Config(
+				"url_preview_bound_interface",
+				"Not a valid IP address. Interface names not supported on {OS}."
+			));
+		}
+	}
+
 	Ok(())
 }