For a few days we were unable to access ds-proto-daq remotely. We were also unable to reach the outside world from ds-proto-daq.

To gain more control over the network settings, I have disabled the automatic configuration by dracut. I created the file /etc/dracut.conf.d/no-ifcfg.conf with the single line `omit_dracutmodules+="ifcfg"`.

I then set the following contents in /etc/sysconfig/network-scripts:

# cat ifcfg-enp0s31f6
NAME=enp0s31f6
DEVICE=enp0s31f6
ONBOOT=yes
NETBOOT=yes
UUID=4887c207-13da-4424-8307-116ef2163fd8
IPV6INIT=no
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
HWADDR=18:31:BF:2E:00:12
BOOTPROTO=dhcp
IPV6_PRIVACY=no
AUTOCONNECT_PRIORITY=1
DNS1=137.138.16.5
DNS2=137.138.17.5
PEERDNS=no


# cat ifcfg-enp5s0
TYPE=Ethernet
PROXY_METHOD=None
BROWSER_ONLY=no
BOOTPROTO=static
DHCPCLASS=
IPADDR=192.168.1.1
PREFIX=24
NETMASK=255.255.255.0
GATEWAY=
DEFROUTE=no
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
HWADDR=68:05:CA:8E:66:5C
ONBOOT=yes
DEVICE=enp5s0


Network settings are now correct, and have survived a reboot. We are able to talk to both the local network and the outside world. We are also able to connect to ds-proto-daq from lxplus, and via the web proxy.