IP Aliasing, 1.3.100 ->2.0.8

Steve Cowles (scowles@infohiiway.com)
Thu, 25 Jul 1996 12:25:25 -0500


Hello all:

Just upgraded from kernel 1.3.100 to 2.0.8. Compiled kernel with same
options as 1.3.100. Received no compilation errors for 2.0.8. For some
strange reason I am unable to ping the aliased IP address from linux box,
but am able to ping aliased IP address from remote systems when using 2.0.8.
It has been a few months since I compiled the 1.3.100 version, I don't
remember adding any patches to kernel source before compiling 1.3.100. Have
I forgotten something obvious???. Is there anything unique about 2.0.x that
I am unaware of????. I have double checked and triple checked my
configuration files between 1.3.100 -> 2.0.8. I also tried this using
kernels 2.0.0 - 2.0.7 with the same results.

I have tried all kinds of ifconfig options. The following 'ifconfig' is in
my rc.inet1 script which works fine under 1.3.100.

Thanks,
Steve Cowles

------------------ From Linux Box --------------------
(scowles) on (voyager) - [/etc/rc.d] $ ifconfig eth0:1 192.168.221.15 broadcast
192.168.221.255 netmask 255.255.255.0
(scowles) on (voyager) - [/etc/rc.d] $ ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:7092 errors:0 dropped:0 overruns:0
TX packets:7092 errors:0 dropped:0 overruns:0

eth0 Link encap:10Mbps Ethernet HWaddr 00:A0:24:09:5B:15
inet addr:192.168.221.10 Bcast:192.168.221.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8130 errors:0 dropped:0 overruns:0
TX packets:10540 errors:0 dropped:0 overruns:0
Interrupt:10 Base address:0x300

eth0:1 Link encap:10Mbps Ethernet HWaddr 00:A0:24:09:5B:15
inet addr:192.168.221.15 Bcast:192.168.221.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1 errors:0 dropped:0 overruns:0
TX packets:0 errors:0 dropped:0 overruns:0

(scowles) on (voyager) - [/etc/rc.d] $ ping 192.168.221.15
PING 192.168.221.15 (192.168.221.15): 56 data bytes

--- 192.168.221.15 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
(scowles) on (voyager) - [/etc/rc.d] $

------------------ From NT Box ----------------------
e:\users\scowles>ping 192.168.221.15

Pinging 192.168.221.15 with 32 bytes of data:

Reply from 192.168.221.15: bytes=32 time=10ms TTL=64
Reply from 192.168.221.15: bytes=32 time<10ms TTL=64
Reply from 192.168.221.15: bytes=32 time<10ms TTL=64
Reply from 192.168.221.15: bytes=32 time<10ms TTL=64