Displaying 3 results from an estimated 3 matches for "kudrya".
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kubra
2016 May 20
2
UDP truncation
Hello everyone!
Could you help me with UDP truncation problem?
I have three hosts, two on broadband connection, one on 4G (lower MTU).
Judging by tincd logs, MTU discovery works, for example on 4G host:
tincd[4598]: Got MTU probe length 1363
TCP inside the VPN network works fine, but UDP is truncated. By testing
with iperf and dumping traffic I get this:
Between broadband hosts:
2016 May 24
0
UDP truncation
On Fri, May 20, 2016 at 10:09:27PM +0300, Vladimir Kudrya wrote:
> Could you help me with UDP truncation problem?
> I have three hosts, two on broadband connection, one on 4G (lower MTU).
> Judging by tincd logs, MTU discovery works, for example on 4G host:
>
> tincd[4598]: Got MTU probe length 1363
>
> TCP inside the VPN netwo...
2016 May 24
1
UDP truncation
> Tinc will fragment UDP packets that are larger than the discovered path
> MTU and that don't have the DF bit set. Could it be that you have a
> firewall rule somewhere that is blocking fragments?
>
You mean inside network? No, nothing is blocked inside, and nothing
specifically blocks fragmented on outside routes (unless providers
messing with traffic).
For now I worked around