diff --git a/src/lib.rs b/src/lib.rs
index 7222ae1..be290c6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -87,7 +87,7 @@
 //!     
 //!     // Other structured errors
 //!     Err(TracerouteError::Ipv6NotSupported) => {
-//!         eprintln!("IPv6 targets are not yet supported");
+//!         eprintln!("IPv6 targets are not supported on this platform");
 //!     }
 //!     Err(TracerouteError::ResolutionError(msg)) => {
 //!         eprintln!("DNS resolution failed: {}", msg);
diff --git a/src/traceroute.rs b/src/traceroute.rs
index 71b4106..9d16213 100644
--- a/src/traceroute.rs
+++ b/src/traceroute.rs
@@ -13,7 +13,7 @@
 //!
 //! - **`InsufficientPermissions`** - Includes what permissions are needed and suggestions
 //! - **`NotImplemented`** - Feature not yet implemented (e.g., TCP traceroute)
-//! - **`Ipv6NotSupported`** - IPv6 targets not yet supported
+//! - **`Ipv6NotSupported`** - IPv6 targets not supported on this platform
 //! - **`ResolutionError`** - DNS resolution failed
 //! - **`SocketError`** - Socket creation/operation failed
 //! - **`ConfigError`** - Invalid configuration
diff --git a/src/traceroute/config.rs b/src/traceroute/config.rs
index 0dc6a96..30390ac 100644
--- a/src/traceroute/config.rs
+++ b/src/traceroute/config.rs
@@ -61,11 +61,13 @@ impl Default for TimingConfig {
 /// # Default (`Auto`)
 ///
 /// `Auto` prefers IPv4 when a host has both A and AAAA records, and uses
-/// IPv6 only when the host is v6-only. This is a deliberately conservative
-/// default while IPv6 probing is new (currently macOS-only): a dual-stack
-/// host keeps yielding exactly the same trace as previous ftr releases on
-/// every platform, and platforms without IPv6 probe support quietly keep
-/// working. Pass `V6` (CLI `-6`) to opt in for dual-stack hosts.
+/// IPv6 only when the host is v6-only. IPv6 probing is supported on every
+/// platform (macOS/Linux/BSD since 0.9.0, Windows since 0.10.0); the
+/// v4-first default is kept for behavioral compatibility — a dual-stack
+/// host yields exactly the same trace as pre-0.9 ftr releases. This is
+/// deliberately not Happy Eyeballs: the OS may prefer IPv6 for its own
+/// connections to the same host. Pass `V6` (CLI `-6`) to opt in for
+/// dual-stack hosts.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
 pub enum PreferredFamily {
     /// Only resolve to IPv4; error if the host has no A records
diff --git a/src/traceroute/error.rs b/src/traceroute/error.rs
index 5cb9f3a..9c0980f 100644
--- a/src/traceroute/error.rs
+++ b/src/traceroute/error.rs
@@ -76,7 +76,9 @@ pub enum TracerouteError {
         feature: String,
     },
 
-    /// IPv6 targets are not yet supported
+    /// IPv6 targets are not supported on this platform (all tier-1
+    /// platforms — macOS, Linux, Windows, the BSDs — support IPv6; only
+    /// other OSes return this)
     #[error("IPv6 targets are not yet supported")]
     Ipv6NotSupported,