foolscap negotiation fails with "unknown TubID"

[Zooko Wilcox-OHearn]

On Tue, Feb 3, 2015 at 9:15 PM, Lukas Pirl <tahoe-dev at lukas-pirl.de> wrote
>> I'll also double-check if the administrators of the corresponding subnet
>> do any sort of crazy firewalling.
>
> I tried to reproduce this bug and suddenly it worked.
>
> So I asked the administrator of the host and the network administrators
> if they changed anything and it turned out that a whole bunch of updates
> was applied to the FreeBSD OS. Great -.-

Oh...

Huh. From your original post:

>  foolscap.tokens.BananaError: BananaError: ("not right, got 'HTTP/1.1 500 Internal Server Error: unknown TubID eruo3ibyroMODIFIEDvkheeidhbm63vn', expected 101 Switching Protocols",)

I still wish Brian (the designer and author of foolscap), or some
other foolscap experts would ponder this error message for a few
seconds.

I know, I'll just Cc: Brian on this email. :-)

--Zooko