Hi Lads,

I was testing out the openvpn port package and openbsd 6.0
 and I found that while the tunnels are very stable,
there is considerable jitter when sending
 small packets / small pings across the tunnel,
while if I used large packets the latency was much more in line with
network conditions outside the tunnel,

the latency on the network outside the tunnel was 8-12ms

the latency on small packets was anything from 12-200ms
and the pings would stay at 200ms for some periods...

however pinging large packets across the tunnel would give 12-15ms latency
in a much more consistent manner.

has anyone else come across this ?


echo client >/etc/openvpn/openvpn1.conf
echo tls-client>>/etc/openvpn/openvpn1.conf
echo remote serveripaddress 443>>/etc/openvpn/openvpn1.conf
echo proto tcp-client >>/etc/openvpn/openvpn1.conf
echo dev tap1 >>/etc/openvpn/openvpn1.conf
echo ca /etc/openvpn/ca.crt >>/etc/openvpn/openvpn1.conf
echo cert /etc/openvpn/2700002.crt>>/etc/openvpn/openvpn1.conf
echo key /etc/openvpn/private/2700002.dekey>>/etc/openvpn/openvpn1.conf
echo keepalive 1 3>>/etc/openvpn/openvpn1.conf
echo cipher AES-128-CBC>>/etc/openvpn/openvpn1.conf
echo daemon openvpn >>/etc/openvpn/openvpn1.conf
echo #tls-auth /etc/openvpn/private/tlsauth.key >>/etc/openvpn/openvpn1.conf
echo mlock >>/etc/openvpn/openvpn1.conf

I have tried tcp_nodelay, etc but i get a warning about it not being
supported
by the kernel at run time  ...

any tips would be appreciated...

Tom Smyth

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