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Summary: How fast should I expect a recovery of VPN traffic are
a brief network outage?
I am running an OpenVPN client over a WLAN with bad signal
quality. When the WLAN connection goes down, it quickly
reconnects automatically. Tunnel traffic, however, breaks down
for good, even when the connection was down only a few seconds.
It does not recover until about 3 minutes later, when the
process has been restarted with a "SIGUSR1" by ping-restart.
I have tried to play around with the --ping-restart ## option,
to no avail. My suspicion was that the --ping-restart value is
overridden from the server side (over which I have no control)
to 120, as the log says during connecting:
PUSH: Received control message: 'PUSH_REPLY,redirect-gateway
def1,dhcp-option DNS ###.###.67.2,setenv nameserver
###.###.67.2,route-gateway ###.###.30.1,ping 10,ping-restart
120,ifconfig ###.###.30.45 255.255.255.0'
So my question comes down to whether the claim on OpenVPN's
homepage that "tunnel traffic will immediately resume" just
refers to the --ping-restart mechanism, or whether there is
anything else which I can do in terms of configuration to ensure
a quick resumption of tunnel traffic.
Version was 2.0, and I now use 2.1 beta 11.
Best regards,
Henning
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