I hear you man, well, this issue is more than fully escalated and fully documented, the cuplrit has been found. it was actually not functional for me outside my home, since clients of mine seldom have DSL modems with dual band, i.e. 5 GHZ.
So, until the issue is fixed, I am happily migrated to OpenWRT, Kamikaze bleeding edge, to be exact. I have openvpn and it works PERFECTLY.
If you or anyone else is interested on the setup (/etc/config/ files) to get the routes and masquerading right, I'll be happy to help.
Sad that this issue by the way is also present on a Buffalo. As of yet, no solution.
Will probably migrate back to dd-wrt once fixed. / For now, OpenWRT has absolutely no issues with wndr3700v2.
FWIW: Buffalo WZH-HP-G300NH doesn't seem to be having that problem w/OpenVPN and it sounds like this has been isolated to affecting particular model wireless routers...strange.
I am experiencing the same issue, however I don't have any ability to connect via wireless to my cable modem. Is there anything I can do to help further the work along to resolve this?
Posted: Sun Oct 16, 2011 14:52 Post subject: A solution that I found
I have spent many days to find proper config for OpenVPN on my WNDR3700.
I use
DD-WRT v24-sp2 (06/14/11) std
(SVN revision 17201)
Server configuration that works for me is in attachment.
Client configuration I use:
Code:
remote myvpn.address.com 1194
client
remote-cert-tls server
dev tun
proto udp
resolv-retry infinite
nobind
persist-key
persist-tun
float
ca ca.crt
cert client.crt
key client.key
ns-cert-type server
mute-replay-warnings
comp-lzo
verb 3
tun-mtu 1500
fragment 1024
mssfix
tun-mtu-extra 32
I can get enough stable link with that.
Strange that if I do not specify tun-mtu-extra 32 connection becomes unstable. I really do not unterstand what does this parameter stand for! If someone could explain me how this affects the link I will be happy.
If I put bigger fragment. For example 1100 link wont be stable anymore.
I connect to internet through PPPoE that eats 8 bytes of MTU. So the max is 1492 for me.
TCP Dump shows that all data packages have max length of 989
tcpdump -nnl -i en1 udp port 1194
My ISP gives me 5Mbps symmetrical link. This configuration allows me to get 3.2Mbps throughput scp through OpenVPN.
I have not tested it much. But it seems like stable.