Sorry. Typo in my command:

lspci -k | grep Eth -A 3

It would be interesting, but I can see a potential problem anyway.

You seem to be part way through implementing a bonded interface, but have not finished yet. If you bond your interfaces, the WAN IP belongs to the bond0 interface. If you don't bond, the two interfaces must be on different subnets or the routing gets very confused.

For bonding see the Bonding HowTo, but first I suggest you get this running normally. To do that, just use one interface connected to your LAN. Do not connect the other, and if you are using static IP's put the disconnected NIC on a separate LAN subnet.

Nick probably meant
# lspci -k | grep Eth -A 3

Yeah, had a lot of issues when was time to register it, but, I've done all as it needed to be done. Also, already gave the "sudo yum update && sudo yum upgrade", already done all the updates possible.

"lspci -k | Eth -A 3"

-bash: Eth: command not found

"cat /etc/clearos/network.conf"

[root@server ~]# cat /etc/clearos/network.conf

# Network mode

MODE="trustedstandalone"



# Network interface roles

EXTIF="enp1s5 enp1s7"

LANIF=""

DMZIF=""

HOTIF=""



# Domain and Internet Hostname

DEFAULT_DOMAIN="bilatogiulio.it"

INTERNET_HOSTNAME="server.bilatogiulio.it"



# Extra LANS

EXTRALANS=""



# ISP Maximum Speeds

ENP1S5_MAX_DOWNSTREAM=28999

ENP1S5_MAX_UPSTREAM=52999

ENP1S7_MAX_DOWNSTREAM=28999

ENP1S7_MAX_UPSTREAM=52999

"cat /etc/resolv-peerdns.conf"

[root@server ~]# cat /etc/resolv-peerdns.conf

# Generated by NetworkManager

search fritz.box

nameserver 192.168.178.1

nameserver 1.1.1.1

nameserver 1.0.0.1

"ifconfig"

[root@server ~]# ifconfig

bond0: flags=5123<UP,BROADCAST,MASTER,MULTICAST>  mtu 1500

        ether 96:bb:b2:e1:c3:50  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0



enp1s5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.178.60  netmask 255.255.255.0  broadcast 192.168.178.255

        inet6 fe80::200:5aff:fe9e:5690  prefixlen 64  scopeid 0x20<link>

        ether 00:00:5a:9e:56:90  txqueuelen 1000  (Ethernet)

        RX packets 141240  bytes 166046028 (158.3 MiB)

        RX errors 0  dropped 2  overruns 0  frame 0

        TX packets 120674  bytes 14058113 (13.4 MiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 11



enp1s7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.178.59  netmask 255.255.255.0  broadcast 192.168.178.255

        inet6 fe80::200:5aff:fe9e:6cd5  prefixlen 64  scopeid 0x20<link>

        ether 00:00:5a:9e:6c:d5  txqueuelen 1000  (Ethernet)

        RX packets 23004  bytes 2577647 (2.4 MiB)

        RX errors 0  dropped 15544  overruns 0  frame 0

        TX packets 2572  bytes 227542 (222.2 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 10



lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Local Loopback)

        RX packets 102  bytes 7942 (7.7 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 102  bytes 7942 (7.7 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

The bond is disabled, and there is any other ClearOS machine in my LAN.

I've seen this elsewhere and I can't remember. I think it is a networking or DNS issue but may be a marketplace issue as well. Have you registered and updated your system. They are the first things to do. To update manually, do a "yum update" from a command line.

Can you also give the output of:

lspci -k | Eth -A 3

cat /etc/clearos/network.conf

cat /etc/resolv-peerdns.conf

ifconfig

For the command line I use PuTTy on a Windows box - select to copy to the clipboard, right-click to paste. For file management and as an editor I use WinSCP.

Can you confirm there is no other device on the ClearOS LAN with the same IP address?