"svn up" over ssh does not work

[Jonathan Wakely]

On 27 January 2018 at 12:11, Thomas Koenig wrote:
> Hi,
>
> I am getting
>
> $ LANG=C svn up
> Updating '.':
> svn: E170013: Unable to connect to a repository at URL
> 'svn+ssh://tkoenig@gcc.gnu.org/svn/gcc/trunk'
> svn: E210002: To better debug SSH connection problems, remove the -q option
> from 'ssh' in the [tunnels] section of your Subversion configuration file.
> svn: E210002: Network connection closed unexpectedly
>
> read-only svn (without ssh) works.
>
> Anything wrong with the servers?

No, the problem must be at your end. Did you recently update your
OpenSSH version?

Does your local config now disable DSA keys by default, and your key
on gcc.gnu.org is a DSA key?

i.e. does this work?
SVN_SSH="ssh -o PubkeyAcceptedKeyTypes=ssh-dss" svn up

If it does then edit your ~/.ssh/config to add that option for Host gcc.gnu.org