This avoids the error messages trying to open already used utuns.
Signed-off-by: Arne Schwabe <a...@rfc2549.org>
---
src/openvpn/tun.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c
index cc7b65cf..30454454 100644
--- a/src/openvpn/tun.c
+++ b/src/openvpn/tun.c
@@ -3021,8 +3021,15 @@ open_darwin_utun(const char *dev, const char *dev_type,
const char *dev_node, st
/* try to open first available utun device if no specific utun is
requested */
if (utunnum == -1)
{
- for (utunnum = 0; utunnum<255; utunnum++)
+ for (utunnum = 0; utunnum < 255; utunnum++)
{
+ char ifname[20];
+ /* if the interface exists silently skip it */
+ ASSERT(snprintf(ifname, sizeof(ifname), "utun%d", utunnum) > 0);
+ if (if_nametoindex(ifname))
+ {
+ continue;
+ }
fd = utun_open_helper(ctlInfo, utunnum);
/* Break if the fd is valid,
* or if early initialization failed (-2) */
--
2.26.2
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