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-rw-r--r--otherlibs/threads/unix.ml2
1 files changed, 2 insertions, 0 deletions
diff --git a/otherlibs/threads/unix.ml b/otherlibs/threads/unix.ml
index 5a893adff..6223e1119 100644
--- a/otherlibs/threads/unix.ml
+++ b/otherlibs/threads/unix.ml
@@ -640,6 +640,8 @@ type socket_bool_option =
| SO_OOBINLINE
| SO_ACCEPTCONN
| TCP_NODELAY
+ | IPV6_ONLY
+
type socket_int_option =
SO_SNDBUF