diff options
| -rw-r--r-- | tun/tun_linux.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tun/tun_linux.go b/tun/tun_linux.go index 1e44b59..179635a 100644 --- a/tun/tun_linux.go +++ b/tun/tun_linux.go @@ -392,6 +392,9 @@ func (tun *NativeTun) Close() error { func CreateTUN(name string, mtu int) (Device, error) { nfd, err := unix.Open(cloneDevicePath, os.O_RDWR, 0) if err != nil { + if os.IsNotExist(err) { + return nil, fmt.Errorf("CreateTUN(%q) failed; %s does not exist", name, cloneDevicePath) + } return nil, err } |