Изменение индекса ethX

Когда я запускал ifconfig на одной из моих машин, я видел их.

Q - это где индексы eth3 и eth4 из? Есть ли способ изменить их на eth0 и eth1?

$ ifconfig
eth3      Link encap:Ethernet  HWaddr 00:1a:a0:9d:c9:90  
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fddc:2a53:4ad:0:a412:573:557c:ce58/64 Scope:Global
          inet6 addr: fddc:2a53:4ad:0:21a:a0ff:fe9d:c990/64 Scope:Global
          inet6 addr: fe80::21a:a0ff:fe9d:c990/64 Scope:Link
          inet6 addr: fddc:2a53:4ad::c68/128 Scope:Global
          inet6 addr: fddc:2a53:4ad:0:41f0:3be9:2668:e5b/64 Scope:Global
          inet6 addr: fddc:2a53:4ad:0:4daf:e298:e54c:2540/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:217764 errors:0 dropped:0 overruns:0 frame:0
          TX packets:402733 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:21329905 (21.3 MB)  TX bytes:40208000 (40.2 MB)
          Interrupt:20 Memory:fdfc0000-fdfe0000 

eth4      Link encap:Ethernet  HWaddr e8:94:f6:02:eb:a7  
          inet addr:192.168.0.108  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::ea94:f6ff:fe02:eba7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2604292 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2069814 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:486616623 (486.6 MB)  TX bytes:472115888 (472.1 MB)

Edit1:

$ grep 'eth' /etc/udev/rules.d/70-persistent-net.rules
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:14:6c:72:d2:46", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1e:c9:6c:8c:a3", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="30:b5:c2:03:46:4d", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1a:a0:9d:c9:90", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="e8:94:f6:02:eb:a7", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth4"

(Да, у меня есть два Эт-карты, один 100 и другие 1000 Мбит / с).