My system has two network cards and I'm doing a SSH installation.
During 1st stage eth1 is used. After reboot I have no network.

After some debugging I renamed the file ifcfg-eth1 to ifcfg-eth0
and did a rcnetwork restart and then I had network again.

Content of ifcfg-eth1:
BOOTPROTO='dhcp'
STARTMODE='onboot'
NAME='Realtek RT8139'

Output of hwinfo --network (after reboot):
26: None 00.0: 10700 Loopback                                   
  [Created at net.124]
  Unique ID: ZsBS.GQNx7L4uPNA
  SysFS ID: /class/net/lo
  Hardware Class: network interface
  Model: "Loopback network interface"
  Device File: lo
  Link detected: yes
  Config Status: cfg=new, avail=yes, need=no, active=unknown

27: None 00.0: 10701 Ethernet
  [Created at net.124]
  Unique ID: usDW.ndpeucax6V1
  Parent ID: rBUF.IQxIdIhhuH7
  SysFS ID: /class/net/eth0
  SysFS Device Link: /devices/pci0000:00/0000:00:1e.0/0000:06:02.0
  Hardware Class: network interface
  Model: "Ethernet network interface"
  Driver: "8139too"
  Driver Modules: "8139too"
  Device File: eth0
  HW Address: 00:08:54:0e:96:50
  Link detected: yes
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #20 (Ethernet controller)

28: None 01.0: 10701 Ethernet
  [Created at net.124]
  Unique ID: L2Ua.ndpeucax6V1
  Parent ID: JNkJ.uBLszieArY5
  SysFS ID: /class/net/eth1
  SysFS Device Link: /devices/pci0000:00/0000:00:1c.1/0000:04:00.0
  Hardware Class: network interface
  Model: "Ethernet network interface"
  Driver: "sky2"
  Driver Modules: "sky2"
  Device File: eth1
  HW Address: 00:11:11:1a:a2:18
  Link detected: no
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #18 (Ethernet controller)

If you need more info or access to the system just tell me.