Aliasy do interfejsów sieciowych

[Roman Werpachowski]

Mam w /etc/sysconfig takie pliki:

ifcfg-eth0:

DEVICE=eth0
IPADDR=148.81.46.253
PREFIX=26
GATEWAY=148.81.46.249
ONBOOT=yes
USERCTL=no
BOOTPROTO=none

i ifcfg-eth0:1

DEVICE=eth0:1
IPADDR=148.81.46.251
PREFIX=26
GATEWAY=148.81.46.249
ONBOOT=yes
USERCTL=no
BOOTPROTO=none

Ifconfig pokazuje coś takiego:

eth0      Link encap:Ethernet  HWaddr 00:50:BF:0C:75:A8  
          inet addr:148.81.46.253  Bcast:148.81.46.255  Mask:255.255.255.192
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:32156 errors:0 dropped:0 overruns:0 frame:0
          TX packets:43468 errors:0 dropped:0 overruns:0 carrier:0
          collisions:7 txqueuelen:100 
          Interrupt:10 Base address:0x6200 

eth0:1    Link encap:Ethernet  HWaddr 00:50:BF:0C:75:A8  
          inet addr:148.81.46.251  Bcast:148.81.46.255  Mask:255.255.255.192
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          Interrupt:10 Base address:0x6200 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:3924  Metric:1
          RX packets:46 errors:0 dropped:0 overruns:0 frame:0
          TX packets:46 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 

a route coś takiego:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
148.81.46.192   *               255.255.255.192 U     0      0        0 eth0
default         adept           0.0.0.0         UG    0      0        0 eth0

Wszystko wydaje sie byc OK. A mimo tego 

ping 148.81.46.251 nie działa (w tej samej sieci)
a ping 148.81.46.253 działa.

Pozdrawiam,

Romek

-- 
Roman Werpachowski
\left(- \frac{\hbar^{2}}{2m}\Delta + V\left(x\right)\right)\Psi = 
\imath\hbar\frac{\partial}{\partial t}\Psi
linux registered user 183124
sysadm @ student.ifpan.edu.pl