[SOLVED] Disable IPv6

CBoeckler

New Member
Dec 7, 2020
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Hi,

I did a fresh install of PBS. Everything looked fine, but after the initial reboot I was (and still am) not able to connect to the web GUI on Port 8007. Fortunately connecting via SSH works fine.
I noticed by lsof -i that a proxmox-backup-proxy process is listening on Port 8007 but only in IPv6 mode. In our network we only use IPv4. I already disabled IPv6 in /etc/sysctl.conf by a line net.ipv6.conf.all.disable_ipv6 = 1. So my network interface has only an IPv4 adress at the moment.

Do you have any hints where to tell proxmox-backup-proxy to use IPv4 only? I found no config file for it.

Thanks!
 
Last edited:
I noticed by lsof -i that a proxmox-backup-proxy process is listening on Port 8007 but only in IPv6 mode. I
Usually (meaning unless you tweaked /etc/gai.conf or set the sysctl 'net.ipv6.bindv6only' to true, or something comparable) the listening socket accepts connections on IPv4 and IPv6 without any problem.

What behavior do you see when connecting to https://your.ip.addr.ess:8007 (e.g. with `openssl s_client -connect your.ip.addr.ess:8007`)?
anything problematic in the logs?
 
Thanks for your reply. In the meantine I found out that this problem is related to network connectivity (routing/firewall), since it does not occur when connecting (via IPv4) from a host in the same network.
This issue is solved.
 

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