The markings match glibc markings.
Signed-off-by: Ma Shimiao <mashimiao.fnst@xxxxxxxxxxxxxx>
---
man3/if_nameindex.3 | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/man3/if_nameindex.3 b/man3/if_nameindex.3
index 2e38fbf..9d38c6e 100644
--- a/man3/if_nameindex.3
+++ b/man3/if_nameindex.3
@@ -101,6 +101,21 @@ function first appeared in glibc 2.1, but before glibc 2.3.4,
the implementation supported only interfaces with IPv4 addresses.
Support of interfaces that don't have IPv4 addresses is available only
on kernels that support netlink.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface Attribute Value
+T{
+.BR if_nameindex (),
+.br
+.BR if_freenameindex ()
+T} Thread safety MT-Safe
+.TE
+
.SH CONFORMING TO
RFC\ 3493, POSIX.1-2001.
--
2.1.0
--
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