TLS failure

[Colin Watson]

On Mon, Oct 22, 2018 at 12:11:48AM +0200, Ralf Mardorf via ubuntu-users wrote:
> On Sun, 21 Oct 2018 23:00:16 +0100, Colin Watson wrote:
> >Have you checked for MTU problems?  This is the sort of weird problem
> >that an incorrect MTU can cause.
> 
> It's double Dutch to me, but IIUC traceroute could be used to follow
> related issues.
> 
> $ traceroute vehicletax.service.gov.uk --mtu

That's probably a reasonable thing to try, yes.  The other cruder thing
I sometimes do when I've forgotten about that sort of tool is to just
try decreasing a particular system's MTU temporarily and see if it
helps; if it does, you can then bisect to find the maximum value that
works.

-- 
Colin Watson                                       [cjwatson at ubuntu.com]