kgizdov's questions

I'm trying to setup an IPv6 web-server on CentOS 7.2 with NGINX. I have tested my IPv6 connectivity outgoing and incoming - everything works. My IP, AAAA records, etc as fine as well. Essentially everything is OK until I enable FirewallD.

I have it set up to default to the drop zone with eth0 interface. I have enabled dhcpv6-client, http, https and ssh (ssh is on a custom port). When the firewall is enabled no IPv6 traffic can leave or enter the machine. Traceroute6 to anything (even the gateway) only goes to localhost. If I disable the firewall, it's all good.

I have no idea why this is happening. I couldn't find anything online in order to make FirewallD apply the same IPv4 config to the IPv6 traffic. I personally thought, it would do that automatically, as all of its commands are IP protocol agnostic.

Any help is much appreciated.

My problem is pretty much as the title describes it. I am running ssh session and on my server I screen for multitasking. My issue here is that I have at least 4 screens open and detached, but screen -r connects only the the last screen I have visited. screen -list also only lists the last screen, as if there is only one screen open. However, once I am in one of the screens, I can freely switch between them with Ctrl+A and N and all of them are there. What am I doing wrong?

Thanks.