Sorry, don’t know what are MTU issues.
Here is what I hope is the relevant log:
2017-12-14 12:25:17,342:INFO:certbot.auth_handler:Waiting for verification…
2017-12-14 12:25:17,342:DEBUG:acme.client:JWS payload:
{
“keyAuthorization”: “kpJw-S9olvkNnOvqEWlDPFN4OoCXTbvqB8-EzWBJX6A.iJQqAqqI7duuD82Wf5EW2ojenF0aDaznYmID9PVNvhY”,
“type”: “http-01”,
“resource”: “challenge”
}
2017-12-14 12:25:17,352:DEBUG:acme.client:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/challenge/1efdXRu2VtQRrPrhDJVR74atJSqcBznwXq82jmgDtzA/2732711736:
{
“protected”: “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”,
“payload”: “ewogICJrZXlBdXRob3JpemF0aW9uIjogImtwSnctUzlvbHZrTm5PdnFFV2xEUEZONE9vQ1hUYnZxQjgtRXpXQkpYNkEuaUpRcUFxcUk3ZHV1RDgyV2Y1RVcyb2plbkYwYURhem5ZbUlEOVBWTnZoWSIsIAogICJ0eXBlIjogImh0dHAtMDEiLCAKICAicmVzb3VyY2UiOiAiY2hhbGxlbmdlIgp9”,
“signature”: “qxMbIACV6JLDb8sl1omaRQSQPqG_VLxVGzantx0OJB8RBxK4lCWhO2SodNKbomVpeEf-w_38FcDhlziZqO6dk2emmJbekXdmaEcLdlLVbyCidO1D8TV4Wwc0tWWlP-VnBGAynajjPDOg59_7GWEueAT_gJbKnq4lkgGoQAZslfPhUKQ6nNQGWsqxG7UaVDFf5nCNivAMGBLiEwui8UsU3YCL-eo1_h_gWwxs_4PgjjrfZlC7CLrCuDDAEHwrRERoDg9cNvwy9BjpCktRVXz9OYUQYmTS34iWVUBAgzV0XoO3NEaImTGWSgcKkZp0d-_DloyqKmEibknyYlghF7Fv2w”
}
2017-12-14 12:26:02,402:DEBUG:certbot.log:Exiting abnormally:
Traceback (most recent call last):
File “/usr/bin/certbot”, line 11, in
load_entry_point(‘certbot==0.19.0’, ‘console_scripts’, ‘certbot’)()
File “/usr/lib/python2.7/dist-packages/certbot/main.py”, line 861, in main
return config.func(config, plugins)
File “/usr/lib/python2.7/dist-packages/certbot/main.py”, line 786, in certonly
lineage = _get_and_save_cert(le_client, config, domains, certname, lineage)
File “/usr/lib/python2.7/dist-packages/certbot/main.py”, line 80, in _get_and_save_cert
renewal.renew_cert(config, domains, le_client, lineage)
File “/usr/lib/python2.7/dist-packages/certbot/renewal.py”, line 297, in renew_cert
new_certr, new_chain, new_key, _ = le_client.obtain_certificate(domains)
File “/usr/lib/python2.7/dist-packages/certbot/client.py”, line 318, in obtain_certificate
self.config.allow_subset_of_names)
File “/usr/lib/python2.7/dist-packages/certbot/auth_handler.py”, line 81, in get_authorizations
self._respond(resp, best_effort)
File “/usr/lib/python2.7/dist-packages/certbot/auth_handler.py”, line 134, in _respond
resp, chall_update)
File “/usr/lib/python2.7/dist-packages/certbot/auth_handler.py”, line 158, in _send_responses
self.acme.answer_challenge(achall.challb, resp)
File “/usr/lib/python2.7/dist-packages/acme/client.py”, line 229, in answer_challenge
response = self.net.post(challb.uri, response)
File “/usr/lib/python2.7/dist-packages/acme/client.py”, line 682, in post
return self._post_once(*args, **kwargs)
File “/usr/lib/python2.7/dist-packages/acme/client.py”, line 693, in _post_once
response = self._send_request(‘POST’, url, data=data, **kwargs)
File “/usr/lib/python2.7/dist-packages/acme/client.py”, line 627, in _send_request
response = self.session.request(method, url, *args, **kwargs)
File “/usr/lib/python2.7/dist-packages/requests/sessions.py”, line 502, in request
resp = self.send(prep, **send_kwargs)
File “/usr/lib/python2.7/dist-packages/requests/sessions.py”, line 612, in send
r = adapter.send(request, **kwargs)
File “/usr/lib/python2.7/dist-packages/requests/adapters.py”, line 516, in send
raise ReadTimeout(e, request=request)
ReadTimeout: HTTPSConnectionPool(host=‘acme-v01.api.letsencrypt.org’, port=443): Read timed out. (read timeout=45)
2017-12-14 12:26:02,408:ERROR:certbot.log:An unexpected error occurred: