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-rw-r--r--share/man/man4/tap.46
1 files changed, 5 insertions, 1 deletions
diff --git a/share/man/man4/tap.4 b/share/man/man4/tap.4
index 6932b79..c82220b 100644
--- a/share/man/man4/tap.4
+++ b/share/man/man4/tap.4
@@ -85,7 +85,11 @@ The Ethernet tunnel device, normally
.Pa /dev/tap Ns Sy N ,
is exclusive-open
(it cannot be opened if it is already open)
-and is restricted to the super-user.
+and is restricted to the super-user, unless the
+.Xr sysctl 8
+variable
+.Va net.link.tap.user_open
+is non-zero.
A
.Fn read
call will return an error
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