|
Thanks François, but something is not clear for me :
if my ip configuration is like below, I tought that the eth0 interface
would not answer to arp request on 192.168.121.242 ???
Horms, I have used tcpdump to get this :
tcpdump -n -e -i eth0 arp and host 192.168.121.242
tcpdump: listening on eth0
09:57:14.902796 0:50:8b:61:22:12 0:2:a5:13:6a:e0 arp 60: arp who-has
192.168.121.242 tell 192.168.121.232
09:57:14.902858 0:2:a5:13:6a:e0 0:50:8b:61:22:12 arp 42: arp reply
192.168.121.242 is-at 0:2:a5:13:6a:e0
The mac address 0:2:a5:13:6a:e0 is eth0
So eth0 answers to requests abour lo:0
Is that normal ?
eth0 Link encap:Ethernet HWaddr 00:02:A5:13:6A:E0
inet addr:192.168.121.240 Bcast:192.168.121.255
Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:358860 errors:0 dropped:0 overruns:0 frame:0
TX packets:340065 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:46020015 (43.8 Mb) TX bytes:24044536 (22.9 Mb)
Interrupt:5 Base address:0xd000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:46620 errors:0 dropped:0 overruns:0 frame:0
TX packets:46620 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3171164 (3.0 Mb) TX bytes:3171164 (3.0 Mb)
lo:0 Link encap:Local Loopback
inet addr:192.168.121.242 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
sysctl.conf :
# Enables source route verification
net.ipv4.conf.default.rp_filter = 1
# Disables the magic-sysrq key
kernel.sysrq = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.ip_forward = 1
# Enable configuration of hidden devices
net.ipv4.conf.all.hidden = 1
# Make the loopback device hidden
net.ipv4.conf.lo.hidden = 1
Frédéric BUCHE
|
