On 10/05/12 14:54, Long Wind wrote: > in early debian distro, I set two PCs' IP (192.168.0.x) > then they can ping each other > > now I install squeeze, with step above performed, I can't ping a PC > running lenny > ping says sth like destination unreachable > > What should I do? > > No reason why you shouldn't be able to do that in Squeeze....
On each box ping the hostname and the localhost. If both localhost (127.0.0.1) and the hostname respond to a ping - then both sides of the NIC work, leaving the routing as the problem. eg.:- # ifconfig shows ip address is 192.168.0.8 (and mask is correct) - check that the eth$ you think is configured, is in fact configured. $ cat /etc/hosts check localhost is correct and the IP address is matched to "hostname". Now:- $ ping localhost then:- $ ping `hostname` If both attempts get a response then both sides of the NIC on that box are working... Unless you have unusual routing rules - if the NICs on both boxen test OK, *and* they are on the same subnet, *and* the link lights are on.... check dmesg for dropped packets or iptables for ICMP rules. Kind regards -- Iceweasel/Firefox/Chrome/Chromium/Iceape/IE extensions for finding answers to questions about Debian:- https://addons.mozilla.org/en-US/firefox/collections/Scott_Ferguson/debian/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4fab50c3.4060...@gmail.com
