f3ddaf83-9602-481e-b3e6-4a5786029748

can you elaborate more on why it didn't work with the private network, what kind of error occurred?

> [error] 2025-03-06 20:01:33.318 Postgrex.Protocol (#PID<0.3343.0>) failed to connect: ** (DBConnection.ConnectionError) tcp connect (postgres.railway.internal:5432): non-existing domain - :nxdomain pid=<0.3343.0>

Is this from the build or deploy logs?

deploy

what env?

do you mean what service?

if so, the document-engine

you'll have to look at previous deployments, in order to progress, I used a public domain for now

what environment

oh you mean like staging vs production. staging

what language?

it's not our codebase or anything. It's a docker image that has some commercial software

so I don't know about any languages

is it oss?

nope

its elixir

try setting a service variable ERL_AFLAGS="-proto_dist inet6_tcp"

i'll try that after I figure out this data migration

seems to at least change the response:

postgres.railway.internal:40141 - no response

Thu Mar 6 10:54:25 PM UTC 2025 - waiting for database to start

wait, woops forgot to change the port back

ok, same issue

try ECTO_IPV6=true

no dice

then you will need to get in contact with the maintainers of that software and ask them how to make the postgres connection work with ipv6

i'm guessing private domains use ipv6, and that's the problem?

yeah

dang, there's not an ipv4 internal domain?

there is not

ok. thanks for the assistance

no problem

!s