On Wed, 2010-08-11 at 18:18 +0200, Simone Caldana wrote: > # dhclient -V > Internet Systems Consortium DHCP Client V3.0.5-RedHat I have always thought this to be a bug. Maybe your views reinforce it even more. How ever I have not filed a bug report because my issue only stems to cheap routers and not a proper setup. I have had the same problems with dhcp client. Although I am not using in the way you are. You see the same problems under a regular eth0 using dhcp. My problems stem from these cheap routers that ISPs provide mostly. > Q) do service network restart fix the issue? > A) yes, always, and yes, temporarily. This makes me think the system is basically right and this may be a bug. And yes I've seen the temp fix also that gives. > Q) why don't you use static IPs, if they are static in DHCP? > A) I want to be able to reconfigure the networks without editing tons of files on tons of machines. I currently have tens of these VMs deployed and the number is likely to increase alot in the future. The deployment and configuration is automatic using a central configuration. That was my solution to use static IPs. on the Linux Machines only. You do not see this under Windows. > Attached a txt with the tcpdump of the above log extraction. That dump is not long enough to tell anything funny going on. John