Add support for ipv6 if_index

Author: messense

src/lib.rs

@@ -337,10 +337,14 @@ mod getifaddrs_windows {
                     }
                 };
 
+                let index = match addr {
+                    IfAddr::V4(_) => ifaddr.ipv4_index(),
+                    IfAddr::V6(_) => ifaddr.ipv6_index(),
+                };
                 ret.push(Interface {
                     name: ifaddr.name(),
                     addr,
-                    index: ifaddr.index(),
+                    index,
                 });
             }
         }

src/windows.rs

@@ -28,7 +28,7 @@ impl IpAdapterAddresses {
             .into_owned()
     }
 
-    pub fn index(&self) -> Option<u32> {
+    pub fn ipv4_index(&self) -> Option<u32> {
         let if_index = unsafe { (*self.0).Anonymous1.Anonymous.IfIndex };
         if if_index == 0 {
             None
@@ -37,6 +37,15 @@ impl IpAdapterAddresses {
         }
     }
 
+    pub fn ipv6_index(&self) -> Option<u32> {
+        let if_index = unsafe { (*self.0).Ipv6IfIndex };
+        if if_index == 0 {
+            None
+        } else {
+            Some(if_index)
+        }
+    }
+
     pub fn prefixes(&self) -> PrefixesIterator {
         PrefixesIterator {
             _head: unsafe { &*self.0 },