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I am new in Debian and I have machine with 6 (six) network cards. It's gona be a cheap router, but Linux makes ethX devices only for 4 network cards (eth0...eth3):

root@dc-02:~# dmesg | grep eth
[    1.474080] 8139too 0000:00:0c.0: eth0: RealTek RTL8139 at 0xd400, 00:50:ba:ca:90:87, IRQ 19
[    1.475862] 8139too 0000:00:13.0: eth1: RealTek RTL8139 at 0x7800, 00:c0:df:12:05:1f, IRQ 18
[    1.477545] eth2: 100/10M Ethernet PCI Adapter at 0001d000, 00:02:44:45:01:84, IRQ 16.
[    1.479051] eth3: 100/10M Ethernet PCI Adapter at 0001b800, 00:02:44:47:04:b0, IRQ 17.
[   15.225247] 8139too 0000:00:0c.0: eth0: link up, 100Mbps, full-duplex, lpa 0xC5E1

lspci shows all cards:

root@dc-02:~# lspci
 . . .
00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
00:0b.0 Ethernet controller: Device 0000:f640 (rev 10)
00:0c.0 Ethernet controller: D-Link System Inc RTL8139 Ethernet (rev 10)
00:0d.0 Ethernet controller: MYSON Technology Inc SURECOM EP-320X-S 100/10M Ethernet PCI Adapter
00:0e.0 Ethernet controller: MYSON Technology Inc SURECOM EP-320X-S 100/10M Ethernet PCI Adapter
 . . .

So, how can I turn on eth4 and eth5? Is it possible? Thanks a lot and best regards.

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Looks like you're only loading the 8139too driver and not whatever driver runs SURECOM EP-320X-S cards. Not sure what the driver would be though. – DerfK May 16 '13 at 3:54
yeah, quite apparently there is no driver loaded for SURECOM, therefore udev did not create additional interfaces for it. – Danila Ladner May 16 '13 at 3:59
Thanks all. I'll check it. We found some cards with RTL8139 on board. – gooamoko May 16 '13 at 4:04
I count five network cards in that lspci output. – Michael Hampton May 16 '13 at 4:07
@Michael Hampton: probably I cut one of them. There was 6. But now (with other cards) - only five. – gooamoko May 16 '13 at 5:24

So, when I replaced SURECOM NIC by RTL8139 based chipset NIC's everything was fine.

The problem realy was in the drivers. Great thanks for advices to DerfK and Danila Ladner.

Only one problem was in that moment - to give "right" IP for each NIC.

I have searched in google for renaming ethX devices in udev and found, that I can write riles for naming devices by udev. In Debian 7 this rules already exists in /etc/udev/rules.d/70-persistent-net.rules. I I have edited this file for my requirements.

root@dc-02:/etc/udev/rules.d# cat /etc/udev/rules.d/70-persistent-net.rules

# This file was automatically generated by the /lib/udev/write_net_rules                                                                                                                                                                     
# program, run by the persistent-net-generator.rules rules file.                                                                                                                                                                             
# You can modify it, as long as you keep each rule on a single                                                                                                                                                                               
# line, and change only the value of the NAME= key.                                                                                                                                                                                          

# PCI device 0x1186:/sys/devices/pci0000:00/0000:00:0d.0 (8139too)                                                                                                                                                                           
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:ba:ca:90:87", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"                                                                                        

# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:0d.0 (8139too)                                                                                                                                                                           
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:22:88:86:78", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"                                                                                        

# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:0a.0 (8139too)                                                                                                                                                                           
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:22:39:47:4f", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"                                                                                        

# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:13.0 (8139too)                                                                                                                                                                           
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:22:39:47:64", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3"

# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:0b.0 (8139too)                                                                                                                                                                           
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:40:f4:87:f6:e4", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth4"                                                                                        

# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:0a.0 (8139too)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="4c:00:10:a1:e9:9c", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth5"

So, now - there is no any problems and everything works fine. I think, this question is closed.

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