ipv6: add missing BUGS section
Change-Id: I42e83ca311b499459c4d6fa75984be3e86da6a22
Reviewed-on: https://go-review.googlesource.com/34433
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/ipv6/doc.go b/ipv6/doc.go
index 78a779c..52d2c3d 100644
--- a/ipv6/doc.go
+++ b/ipv6/doc.go
@@ -239,3 +239,5 @@
// In the fallback case, ExcludeSourceSpecificGroup and
// IncludeSourceSpecificGroup may return an error.
package ipv6 // import "golang.org/x/net/ipv6"
+
+// BUG(mikio): This package is not implemented on NaCl and Plan 9.