paramiko socket.timeout

[Danilo G. Baio]

duplicity 0.8.09
Python 3.7.6
FreeBSD 13.0-CURRENT
py37-paramiko-2.6.0
py37-scp-0.13.2

duplicity $version ($reldate)
Args: /usr/local/bin/duplicity full -v9 --encrypt-key=REDACTED --encrypt-sign-key=REDACTED /home/test paramiko+scp://REDACTED//home/test/dup
FreeBSD t480.local 13.0-CURRENT FreeBSD 13.0-CURRENT #9 r355478: Fri Dec 6 23:47:27 -03 2019
<email address hidden>:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG amd64 amd64 /usr/local/bin/python3.7 3.7.6 (default, Dec 26 2019, 01:38:38)
[Clang 9.0.1 (<email address hidden>:llvm/llvm-project.git c1a0a213378a458fbea1a5c77b31
[...]
ssh: [chan 1] Max packet in: 32768 bytes
ssh: [chan 1] Max packet out: 32768 bytes
ssh: Secsh channel 1 opened.
ssh: [chan 1] Sesch channel 1 request ok
ssh: [chan 1] EOF received (1)
ssh: [chan 1] EOF sent (1)
[...]
ssh: [chan 3] Max packet in: 32768 bytes
ssh: [chan 3] Max packet out: 32768 bytes
ssh: Secsh channel 3 opened.
ssh: [chan 3] Sesch channel 3 request ok
ssh: Sending global request "<email address hidden>"
ssh: Sending global request "<email address hidden>"
Backtrace of previous error: Traceback (innermost last):
  File "/usr/local/lib/python3.7/site-packages/duplicity/backend.py", line 374, in inner_retry
    return fn(self, *args)
  File "/usr/local/lib/python3.7/site-packages/duplicity/backend.py", line 534, in put
    self.__do_put(source_path, remote_filename)
  File "/usr/local/lib/python3.7/site-packages/duplicity/backend.py", line 520, in __do_put
    self.backend._put(source_path, remote_filename)
  File "/usr/local/lib/python3.7/site-packages/duplicity/backends/ssh_paramiko_backend.py", line 312, in _put
    raise BackendException(u"scp remote error: %s" % chan.recv(-1))
  File "/usr/local/lib/python3.7/site-packages/paramiko/channel.py", line 701, in recv
    raise socket.timeout()
 socket.timeout

With pexpect+scp:// works fine.

I tried paramiko-2.6.0 and paramiko-2.7.1 and I saw this issue after updating Python from 3.6 to 3.7 on my box.

Thanks for your time.