similar to: Hardware to build an Enterprise AsteriskUniversal Gateway

I have been trying to figure out why my domU NIC becomes unreachable (could not even ping) at various times. (Normally when the server was trying to update clamav from the various busy mirrors at 4am). There also seemed to be some latency when connecting which I chalked up to it being a virtual machine. When I checked my logs, I found thousands of : Nov 17 04:07:52 nomad kernel: Neighbour

hi, I have very annoying problem.. First a simple diagram : x.x.1.0/24 -----------------| x.x.2.0/24 -----------------|---- (gw: eth0: x.x.1.1 eth1: x.x.2.1 eth1: x.x.3.1) ----> x.x.3.0/24 -----------------| now I have two machines x.x.3.10 (2.4 kernel) and x.x.3.11(2.6 kernel) AND they are in the same LAN (phisical net) but as u see in different IP (logical nets). As I look the traffic

>From http://shorewall.net/ProxyARP.htm (and the Setup Guide): > A word of warning is in order here. ISPs typically configure their > routers with a long ARP cache timeout. If you move a system from > parallel to your firewall to behind your firewall with Proxy ARP, it > will probably be HOURS before that system can communicate with the > internet. You can call your ISP and ask

From: Stephen Hemminger <shemminger@linux-foundation.org> This adds another inet device option to enable gratuitous ARP when device is brought up or address change. This is handy for clusters or virtualization. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> ---

Hi, So, the issue is a fairly common one: Network doesn''t work for like a minute or so after a live migration. The setup is a debian wheezy dom0 with xen 4.1.2 running 3.6.11 kernel. The domU is a Ubuntu 12.04 with a 3.2 kernel. The networking setup uses bridges on the dom0. I also made sure that the bridge forwarding delay is set to 0. The VM doesn''t initiate any network

In a recent conversation with Chris it was brought up that the LLVM project doesn't have a way to incorporate fine-grained unit tests (in other words, tests that exersize the members of a single C++ class). I was wondering what is the general feeling about adding this to LLVM. Let me discuss some of the details: First, there is the question of a test framework. One possibility is to

Dear R users, I am currently learning how to work with a new shared computer (a Mac pro) in our lab, that is dedicated to execute R code for large simulations (over a few days). We have a VNC option to remote control the computer, with a shared used session, but this is not really needed in most of the cases. I would like to do some ssh access. This is pretty straigthforward, and I am able to

Hi Who concern, I setup TINC VPN follow these. 192.168.1.x / 24 (Client groups) | 192.168.1.1 (eth1) (GW1) 202.44.34.206 (eth0) || Internet || 202.44.45.14 (eth0) (GW2) 192.168.2.1 (eth1)

Hello, My apologies if this isn''t the right place to send questions about this thread. I have a couple one''s about proxy_arp and gratuitous arp reply frames. I have setup the proxy_arp parameter on a linux system (kernel 2.4.20). Now, when I start a M$-Windoze machine it complain about "...duplicated IP address...". This is a know behaviour, and the solution is

I''ve implemented code to send out bogus gratuitous ARP packet from vna in order to fix CR 6701114. The webrev is at: http://jurassic.eng/net/consulte.prc/export/build/xvm-6701114/webrev Some backgroud information (see CR 6701114 for more detail): During live migration of an xVM domain from one dom0 to another, the VNIC will be moved from one switch port to another. But, the

On 07/11/2014 04:31 PM, H. Peter Anvin wrote: > On 07/11/2014 10:17 AM, Alexander Perlis wrote: >> >> Trace shows that lpxelinux.0 6.03-pre18 is transferred, and after that >> there is only ARP traffic: a "gratuitous" ARP announcement by the >> client, and then a string of ARP requests and replies in which the >> client is asking for the MAC of the PXE

On Fri, Jul 11, 2014 at 5:49 PM, Alexander Perlis <aperlis at math.lsu.edu> wrote: > On 07/11/2014 04:31 PM, H. Peter Anvin wrote: >> >> On 07/11/2014 10:17 AM, Alexander Perlis wrote: >>> >>> >>> Trace shows that lpxelinux.0 6.03-pre18 is transferred, and after that >>> there is only ARP traffic: a "gratuitous" ARP announcement by

Hi Saverio, I found conflict: 172.16.1.10 00:50:56:1b:ba:5e VMware, Inc. 172.16.1.10 00:50:56:2b:12:e6 VMware, Inc. (DUP: 2) 172.16.1.10 00:50:56:2b:12:e6 VMware, Inc. (DUP: 3) 172.16.1.10 00:50:56:2b:12:e6 VMware, Inc. (DUP: 4) 172.16.1.10 00:50:56:2b:12:e6 VMware, Inc. (DUP: 5) So my assumptions were wrong ! :D Probably Virtual

On 07/10/2014 06:39 PM, Gene Cumm wrote: > On Thu, Jul 10, 2014 at 7:24 PM, H. Peter Anvin <hpa at zytor.com> wrote: >> On 07/10/2014 04:07 PM, Alexander Perlis wrote: >>> Trying to PXE boot a Dell Optiplex 990 with BIOS A16, which has Intel >>> Boot Agent 1.3.81 (2.1 build 089). It gets network and launches >>> lpxelinux.0, I see the PXELINUX banner line,

On Wed, Jul 6, 2016 at 7:34 AM, Christof B?ckler <cb at wvsgym.de> wrote: > Am 06.07.2016 um 12:38 schrieb Gene Cumm: >>> >>> It's strange that after the same start (DHCP request and ACK, ARP request >>> and reply) lpxelinux.0 gets loaded and then follows an (unnecessary) >>> gratuitous ARP for the client IP (172.16.12.1) plus an unanswered (!)

(Apologies to those Toronto Asterisk Users' Group folks who have seen this message... I figured I'd have more success with a wider audience) I'm trying to boot a Cisco 7960 from an ISC DHCPD server (3.0.3 on FreeBSD 4.11), so far unsuccessful, and getting some odd behaviour on the wire. I wonder if anyone has done this before and therefore can validate whether or not the traffic I am

This is what I want to avoid :D I want an active Tinc virtual interface active with ip identical of the other firewall, without ip conflict on the same network. Do you know if Tun type virtual interface on one host can have same ip address of another host in the same network without ip conflict ? ie if a tun virtual interface can work active without transmitting on real network ? or if such a

On Tue, May 02, 2017 at 09:53:15PM +0800, Bright Zhao wrote: > When tinc daemon get up on A(together with some manual scripts for destination to 8.8.8.8), the route table looks like below: > 10.0.0.0/24 dev tun0 > 10.0.0.3 dev tun0 > 8.8.8.8 via 10.0.0.3 dev tun0 IPv4 packets have only two addresses in their header: the source and the destination address. If you want to send a packet

On 07/11/2014 10:17 AM, Alexander Perlis wrote: > > Trace shows that lpxelinux.0 6.03-pre18 is transferred, and after that > there is only ARP traffic: a "gratuitous" ARP announcement by the > client, and then a string of ARP requests and replies in which the > client is asking for the MAC of the PXE server, about every 3 seconds, > for about 2 minutes, after which I