| Message ID | 20240506011637.27272-7-antonio@openvpn.net (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Introducing OpenVPN Data Channel Offload | expand |
diff --git a/drivers/net/ovpn/main.c b/drivers/net/ovpn/main.c index 584cd7286aff..cc8a97a1a189 100644 --- a/drivers/net/ovpn/main.c +++ b/drivers/net/ovpn/main.c @@ -51,6 +51,13 @@ static int ovpn_net_open(struct net_device *dev) IPV4_DEVCONF_ALL(dev_net(dev), SEND_REDIRECTS) = false; } + /* ovpn keeps the carrier always on to avoid losing IP or route + * configuration upon disconnection. This way it can prevent leaks + * of traffic outside of the VPN tunnel. + * The user may override this behaviour by tearing down the interface + * manually. + */ + netif_carrier_on(dev); netif_tx_start_all_queues(dev); return 0; }
An ovpn interface will keep carrier always on and let the user decide when an interface should be considered disconnected. This way, even if an ovpn interface is not connected to any peer, it can still retain all IPs and routes and thus prevent any data leak. Signed-off-by: Antonio Quartulli <antonio@openvpn.net> --- drivers/net/ovpn/main.c | 7 +++++++ 1 file changed, 7 insertions(+)