# ElasticSearch IPv6
**URL:** https://discuss.elastic.co/t/elasticsearch-ipv6/383150
**Category:** Elasticsearch
**Created:** [November 1, 2025, 2:34pm UTC](https://discuss.elastic.co/t/elasticsearch-ipv6/383150 "2025-11-01T14:34:17Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Peter\_Penzov](https://discuss.elastic.co/u/Peter_Penzov)
#### Post date: [November 1, 2025, 2:34pm UTC](https://discuss.elastic.co/t/elasticsearch-ipv6/383150/1 "2025-11-01T14:34:17Z")
I installed Elasticsearch 9.2.0 on Ubuntu VN hosted on Oracle OCI cloud. But I cannot connect outside. After listening the listening ports on the VM I see this:
`sudo netstat -ntlp`
`Active Internet connections (only servers)`
`Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name`
`tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 692/sshd: /usr/sbin`
`tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 601/systemd-resolve`
`tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/init`
`tcp6 0 0 :::22 :::* LISTEN 692/sshd: /usr/sbin`
`tcp6 0 0 :::111 :::* LISTEN 1/init`
`tcp6 0 0 10.0.0.12:9300 :::* LISTEN 1040/java`
`tcp6 0 0 :::9200 :::* LISTEN 1040/java`
As you can see Elasticsearch by default is not listening on IPv4 port. I disabled on the VM IPv6 but still it’s not working. Can you recommend some solution?
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### Author:  [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [November 1, 2025, 5:22pm UTC](https://discuss.elastic.co/t/elasticsearch-ipv6/383150/2 "2025-11-01T17:22:55Z")
Somewhat confusingly `tcp6` refers to the mixed IPv4 and IPv6 stack, as you can see from this line which has an IPv4 address:
> `tcp6 0 0 10.0.0.12:9300 :::* LISTEN 1040/java`
This line means it’s listening on all interfaces:
> `tcp6 0 0 :::9200 :::* LISTEN 1040/java`
Please read [these docs](https://www.elastic.co/docs/reference/elasticsearch/configuration-reference/networking-settings#modules-network-binding-publishing) carefully for further information, noting in particular:
> It is usually a mistake to use `0.0.0.0` as a publish address on hosts with more than one network interface.