": dial tcp: address [[2001:db8:::2]]:443: missing port in address
ORIGINAL STACK TRACE:
github.com/pritunl/pritunl-client-electron/service/profile.(*Profile).reqOvpn
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/profile.go:2365 +0x100f1b64c
github.com/pritunl/pritunl-client-electron/service/profile.(*Profile).reqOvpn
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/profile.go:2440 +0x100f1bc0f
github.com/pritunl/pritunl-client-electron/service/profile.(*Profile).openOvpn
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/profile.go:1995 +0x100f19463
github.com/pritunl/pritunl-client-electron/service/profile.(*Profile).startOvpn
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/profile.go:1381 +0x100f1600b
github.com/pritunl/pritunl-client-electron/service/profile.(*Profile).Start
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/profile.go:1364 +0x100f15e37
github.com/pritunl/pritunl-client-electron/service/profile.SyncSystemProfiles.func1
/Users/apple/go/src/github.com/pritunl/pritunl-client-electron/service/profile/utils.go:413 +0x100f27493
runtime.goexit
/opt/homebrew/Cellar/go/1.22.2/libexec/src/runtime/asm_arm64.s:1222 +0x1009da303
```
VPN node ip: 2001:db8:::2 and 192.168.1.2
[vpn.example.com](http://vpn.example.com) ip: 2001:db8:::3 192.168.1.3
---
### Author:  [@zach](https://forum.pritunl.com/u/zach)
#### Post date: [June 24, 2024, 4:22am UTC](https://forum.pritunl.com/t/connection-error-when-using-ipv6/2117/2 "2024-06-24T04:22:33Z")
The first server offline error indicates the request was sent to a host that was online but not running the server. The second error will be fixed in the next release. This can be avoided by using DNS domains for all the hosts.
Also verify the connection single sign-on domain in the top right settings is correctly set to either a load balancer or a domain for one of the online hosts.
---
### Author:  [@Mikki](https://forum.pritunl.com/u/Mikki)
#### Post date: [July 1, 2024, 7:18am UTC](https://forum.pritunl.com/t/connection-error-when-using-ipv6/2117/3 "2024-07-01T07:18:10Z")
> [@Mikki](#):
>
> ```auto
> Post "https://[[2001:db8:::2]]/key/ovpn_wait///": dial tcp: address [[2001:db8:::2]]:443: missing port in address
> ORIGINAL STACK TRACE:
>
> ```
I added DNS to the servers and that removed the post error.
But what do you mean by
> [@zach](#):
>
> The first server offline error indicates the request was sent to a host that was online but not running the server.
So [vpn.example.com](http://vpn.example.com) is the load balancer DNS so yes it is not running any VPN servers.
So i have 3 nodes, vpnnode01 and vpnnode02 is running the same openvpn servers in a replica set and vpnnode03 is running some others
So vpnnode01, vpnnode02
- openvpn server 01
- openvpn server 02
vpnnode03
- openvpn server 03
- openvpn server 04
If client A want to use “openvpn server 01” and login using proxy server [vpn.example.com](http://vpn.example.com) for SAML and then hits the server “vpnnode03” do it then end in offline error?
---
### Author:  [@Mikki](https://forum.pritunl.com/u/Mikki)
#### Post date: [July 1, 2024, 8:18am UTC](https://forum.pritunl.com/t/connection-error-when-using-ipv6/2117/4 "2024-07-01T08:18:11Z")
In out HAProxy config have we tried to change “balance roundrobin” to “source” we will do some more test but the error looks to be gone.
---
### Author:  [@Mikki](https://forum.pritunl.com/u/Mikki)
#### Post date: [July 1, 2024, 8:20am UTC](https://forum.pritunl.com/t/connection-error-when-using-ipv6/2117/5 "2024-07-01T08:20:01Z")
Related to [Pritunl Client open multiple SSO login bowser windows](https://forum.pritunl.com/t/pritunl-client-open-multiple-sso-login-bowser-windows/2118)