tun: guard Device.Events() against chan writes

Signed-off-by: Jordan Whited <jordan@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tun/tun_freebsd.go b/tun/tun_freebsd.go
index a8ebb34..42431aa 100644
--- a/tun/tun_freebsd.go
+++ b/tun/tun_freebsd.go
@@ -329,7 +329,7 @@ func (tun *NativeTun) File() *os.File {
 	return tun.tunFile
 }
 
-func (tun *NativeTun) Events() chan Event {
+func (tun *NativeTun) Events() <-chan Event {
 	return tun.events
 }