adding a comment.

haskell · Jan 18, 2022 · 5a427c5 · 5a427c5
1 parent 47064c7
commit 5a427c5
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Network/Socket/Win32/Cmsg.hsc b/Network/Socket/Win32/Cmsg.hsc
@@ -148,7 +148,8 @@ instance ControlMessage IPv6TClass where
 
 ----------------------------------------------------------------
 
--- | Network interface ID and local IPv4 address.
+-- | Network interface ID and local IPv4 address. The second member is
+--   redundant to be the same as Unix's one and is always 0.0.0.0.
 data IPv4PktInfo = IPv4PktInfo Int HostAddress HostAddress deriving (Eq)
 
 instance Show IPv4PktInfo where