sergey-safarov opened a new issue, #4668:
URL: https://github.com/apache/couchdb/issues/4668
## Description
We have an IPv6-only installation. No IPv4 is configured on the server
(except loopback). In the `vm.agrs` configured
```
-proto_dist inet6_tcp
```
When I start replication to then CouchDB sends only `A` dns request and does
not try to send `AAAA` dns requsts.
[NOTE]: # ( Describe the problem you're encountering. )
[TIP]: # ( Do NOT give us access or passwords to your actual CouchDB! )
## Steps to Reproduce
Create `request.json` file like
```json
{
"user_ctx": {
"name": "admin",
"roles": [
"_admin",
"_reader",
"_writer"
]
},
"source": {
"url": "http://ippbx-1a.la.example.com:5984/mydb";,
"headers": {
"Authorization": "Basic XXXXXXXXXXXX"
}
},
"target": {
"url": "http://127.0.0.1:5984/mydb";,
"headers": {
"Authorization": "Basic XXXXXXXXX"
}
},
"create_target": true,
"continuous": false
}
```
Then send curl command like
```bash
curl \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-d @request.json \
'http://admin:[email protected]:5984/_replicator'
```
in the logs i can see
> Jul 07 09:21:51 ippbx-1b.la.example.com docker[3677369]: [error]
2023-07-07T09:21:51.599467Z
[[email protected]](mailto:[email protected])
<0.6095.0> -------- couch_replicator_httpc: auth plugin initialization failed
"http://ippbx-1a.la.example.com:5984/mydb/";
{session_request_failed,"[http://ippbx-1a.la.example.com:5984/_session","admin",{conn_failed,{error,nxdomain}}}](http://ippbx-1a.la.example.com:5984/_session%22,%22admin%22,%7Bconn_failed,%7Berror,nxdomain%7D%7D%7D)
Jul 07 09:21:51 ippbx-1b.la.example.com docker[3677369]: [error]
2023-07-07T09:21:51.599676Z
[[email protected]](mailto:[email protected])
<0.6095.0> --------
throw:{replication_auth_error,{session_request_failed,"[http://ippbx-1a.la.example.com:5984/_session","admin",{conn_failed,{error,nxdomain}}}}](http://ippbx-1a.la.example.com:5984/_session%22,%22admin%22,%7Bconn_failed,%7Berror,nxdomain%7D%7D%7D%7D):
Replication 69411eb9179c970995746a1ecd781fac+create_target failed to start
"http://ippbx-1a.la.example.com:5984/mydb/"; -> "http://127.0.0.1:5984/mydb/";
doc
<<"shards/00000000-7fffffff/_replicator.1688721035">>:<<"477deb9261a9927a1d20e90f2a001b31">>
stack:[{couch_replicator_httpc,setup,1,[{file,"src/couch_replicator_httpc.erl"},{line,62}]},{couch_replicator_api_wrap,db_open,3,[{file,"src/couch_replicator_api_wrap.erl"},{line,68}]}]
## Expected Behaviour
CouchDB should send a `AAAA` dns request to get a remote host IP address.
If the `AAAA` request fails, then try to send an `A` DNS request.
## Your Environment
[TIP]: # ( Include as many relevant details about your environment as
possible. )
[TIP]: # ( You can paste the output of curl http://YOUR-COUCHDB:5984/ here.
)
* CouchDB version used:
Used `apache/couchdb:3.3.2` docker image.
* Browser name and version:
Used curl to trigger replication.
* Operating system and version:
## Additional Context
IPv6 only `CouchDB` installation.
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