Hi,
Just to let everyone know:
After a couple of weeks, Rogers has fixed the problem and now openvpn is
working
on both 3G and LTE. I did not have to do anything except for a bit of
troubleshooting
with Rogers. I have no idea what they did to get it working.
On 10/17/18 06:25, Jan Just Keijser wrote:
On 15/10/18 16:53, Kristian McColm wrote:
Re: [Openvpn-users] iphone7 with keynote
Hi Frank,
Did you try :
link-mtu 1440
or lower on the server config, and removing other MTU/MSS related
settings? This made it work for me. What Rogers are doing is forcing
your handset back to dual-stacked mode so that the connection will be
over native IPv4 instead of 6to4 (NAT64) which will make it work
again, but you should probably be thinking about enabling native IPv6
on your VPN anyway right?
In 99 out of a 100 cases you do not (should not!) want to mess with
tun-mtu or link-mtu.
If your provider screws up UDP traffic then you should first try
fragment 1400
mssfix
before attempting anything else - that way, the default MTU is left
intact but the OpenVPN data traffic is broken into smaller fragments.
If that does not work, then try getting a tcpdump log on both client
and server side, to see which packets are mangled and/or dropped.
HTH,
JJK
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