[plug] ip address and interface question

Jason uq1 at hate-tank.net
Fri Jun 23 09:18:04 WST 2006


Hi Bill,

I'm running debian sarge

I bring the interfaces up and down manually (ifdown eth0;ifup eth1)

I use no local firewall scripts/software internally, all firewalling is done by my dsl router (netgear dg824M).  No iptables rules are run on any 
machines on the network.

Pinging from the localhost as well as other machines on my internal network return the same results:

tron (laptop) is assigned 192.168.0.4 and .5 and uno is my webserver with .2

uq1 at uno:~$ ping 192.168.0.4
PING 192.168.0.4 (192.168.0.4) 56(84) bytes of data.
64 bytes from 192.168.0.4: icmp_seq=1 ttl=64 time=0.306 ms
64 bytes from 192.168.0.4: icmp_seq=2 ttl=64 time=37.2 ms

--- 192.168.0.4 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.306/18.754/37.203/18.449 ms
uq1 at uno:~$ ping 192.168.0.5
PING 192.168.0.5 (192.168.0.5) 56(84) bytes of data.
64 bytes from 192.168.0.5: icmp_seq=1 ttl=64 time=0.316 ms
64 bytes from 192.168.0.5: icmp_seq=2 ttl=64 time=65.6 ms

--- 192.168.0.5 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.316/33.005/65.695/32.690 ms
uq1 at uno:~$ ssh tron
Password:
No mail.

Last login: Fri Jun 23 08:53:38 2006 from hate-tank.net
uq1 at tron:~$ ping 192.168.0.4
PING 192.168.0.4 (192.168.0.4) 56(84) bytes of data.
64 bytes from 192.168.0.4: icmp_seq=1 ttl=64 time=0.037 ms
64 bytes from 192.168.0.4: icmp_seq=2 ttl=64 time=0.029 ms

--- 192.168.0.4 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.029/0.033/0.037/0.004 ms
uq1 at tron:~$ ping 192.168.0.5
PING 192.168.0.5 (192.168.0.5) 56(84) bytes of data.
64 bytes from 192.168.0.5: icmp_seq=1 ttl=64 time=0.035 ms
64 bytes from 192.168.0.5: icmp_seq=2 ttl=64 time=0.027 ms

--- 192.168.0.5 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.027/0.031/0.035/0.004 ms
uq1 at tron:~$

Hope this is enough information :)

On Fri, Jun 23, 2006 at 09:01:14AM +0800, William Kenworthy wrote:
> Bit vague, more info needed: 
> what distro and version
> How are you bringing the interfaces up/down (initscripts, GUI tool,
> ifconfig, ...)
> Are you using a firewall (home brew or script)
> Where are you pinging from (localhost or remotely)
> 
> BillK
> 
> 



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