similar to: changing MAC address makes VM unreachable

El 21 de febrero de 2017 7:00:03 GMT-05:00, centos-request at centos.org escribi?: >Send CentOS mailing list submissions to > centos at centos.org > > >From: Kahlil Hodgson <kahlil.hodgson at dp.exchange> >To: CentOS mailing list <centos at centos.org> >Subject: Re: [CentOS] Network conections problems > >First guess is that you may have two devices on the

In "Understanding the Linux Kernel" 3rd edition, section 4.7 "Softirqs and Tasklets" it states: "Activation and execution [of defferable functions] are bound together: a deferrable function that has been activated by a given CPU must be executed on the same CPU. There is no self-evident reason suggesting that this rule is beneficial for system performance. Binding the

Hi, I have taken the long and winding road and indeed it lead me to your door. I need your help, please. My Xen includes 2 guests. Xen itself (10.2.0.52) gets free access to the outside world and to its guests. Both guests however (10.2.0.54/10.2.0.55) see each other but stay under house arrest! Not a single ping manages to go past the bridge (xenbr0) and get an answer from the default gateway

So, I'm setting up my first bridge, and I'm running into an interesting issue. I have a 4 port NIC (formerly 4 seperate /29 and /28 LANs) and an onboard NIC (to my ISP). I've setup the bridge using the script included at the bottom of this email (modified from Gentoo for Aurora). When the WET11 (the WET11 is a simple ethernet to wireless bridge) is unplugged, the bridge works

I rebooted xenU from console (dom2) and exited (ctr-]). xm list does not report 2 anymore yet I can log into 2 via console and it is running just fine. Is this a bug? I''ll pull/rebuild and see what happens.. (this is xen-2.0, cset 1.1321.1.1, rh7.3 dom0/dom1) ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on

Op 28-01-15 om 20:17 schreef Gordon Messmer: > On 01/28/2015 05:15 AM, Patrick Bervoets wrote: >> >> When connecting with ssh the console is extremely slow and hangs for >> minutes at a time > > Check for IP address conflicts in the server's network. > > For IPv4: > # arping -D -I <interface> <address> > ARPING 192.168.1.15 from 0.0.0.0 br0

I must have something configured wrong somewhere. I''ve enabled proxy-arp on my shorewall 2.0.7 firewall. Works fine for what its supposed to do, I can see all the machines through it great. However, whenever its enabled, the network on the DMZ goes screwy. I''ve narrowed it down to this: when proxy arp is enabled for that interface, like such: echo 1 >

I have Xen 3.0.3 installed on RH EL5 via RedHat RPMs. I have a Win/XP Pro HVM and a Linux rh5 HVM. I can create both w/o a problem and can interact with the VNC based console for both VMs. The Linux VM interacts via DHCP, obtains an IP and seems to work fine on the network. The Win/XP VM doesn''t work with either DHCP or a static IP address assignment. I can see the virtual interfaces

Dear list, as my Xen3 server is finaly becomming ready for production I was wondering if anyone has written a xen usage monitoring/logging tool? Something like xm top, but with continuose logging to a (rr)database. Or a munin plugin? I can''t remember seeing anything simmilar on the list. BTW: where does xm top get the NETTX(k) and NETRX(k) from? For a munin plugin I''d

Hi all, I use tinc since 2 years between my MPLS sites in router mode, works like a charm. Today i am trying to make an ethernet bridge beetween 2 sites for video conference needs, the raison is that 1 side is behind nat, and i dont have access on the gate, other side is on public range. Because off H323 that doesn't handle unconfigured NAT, i would like to give a public IP to the video

Hi, this is propably bridge related and not really a xen problem, but it might help someone: Some of our domUs are not able to arp. Arp -n show (incomplete), and doing a tcpdump shows, that on the dom0''s eth0 the arp request goes out, the response comes in, but on the vifX.0 interface the arp response is gone. dom0# tcpdump -ni eth0 arp who-has 10.32.2.51 tell 10.32.7.70 arp reply

Hi all, We''ve been using Xen 3.0.3-1 on Debian Etch for around 2 years now using standard Xen bridging. Over the past few months, we''ve experienced the periodic disappearance of VIF macs from the FDB of the bridge. It seems to happen at random, primarily with domUs that typically receive less network traffic. When the VIF stops responding, the mac address for it still shows up

Folks, We have a setup where each mobile node connects with 1 or more tinc instances (over different links) to a central node. tinc is running in switch mode. The link is chosen by setting the IP address on the active link's interface, and the central node sees this after the first packet on the link, and moves the MAC address to a different 'ethernet port' (link). This works really

I observed a strange networking behaviour of my Debian virtual host in function of the MAC address I use. It seems that when I use an existing constructor code, networking works without any problem, but is impossible in the other case... Ex. : - vif = [ ''mac=aa:00:00:00:00:55, bridge=xen-br0'' ] -> no problem - vif = [ ''mac=df:00:00:00:00:55,

Hopefully this is a simple answer. I am new to setting up bridges on a linux system. Here is what I have set up: Laptop directly connected to the eth0 port on the bridge (A Soekris 4521 board). The otherside of the bridge is a wirelass lan card (SMC2532b-w) as wlan0. The wlan0 is setup in managed mode to communicate to my test ap2000. When I do a 'brctl showmacs br0' on the

I''m looking to refine / re-use my recently discussed "Redundant internet connections" (http://mailman.ds9a.nl/pipermail/lartc/2007q2/thread.html#21015) in such a way that I will not be sure of returning traffic, thus I must monitor the connection my self and not rely on inbound traffic to update the kernel counters. I''m considering using arping to ping the

Hi Folks, I have a snv_105 sxce host that I just can''t get to work as expected with crossbow + zones. My test host persephone, is a virtual machine running under VMware ESXi 3.5, with 2 virtual network cards (e1000), all on the same flat network/subnet. It started life just 2 days ago with a clean install of snv_95, and I LUed to 105 yesterday. To rule out any sharing issue, the first

Hi, I'm trying to build a bridge using a 486DX2/66 with two 10 Mbit Ethernet NICs. The machine (tsushima) is running Debian stable and kernel 2.4.26. Previously I used it as a router, so I know the hardware (NICs) is working. The NICs are as follows: eth0: WD80x3 at 0x280, 00 00 C0 0A 2C 2F WD8003-old, IRQ 10, shared memory at 0xd0000-0xd1fff. eth16i.c: v0.35 01-Jul-1999 Mika Kuoppala

Hi, We''re trying to run Xen on a Debian "Etch" base system (kernel 2.6.18-6-xen-amd64), but have come across a strange networking error whenever bridging (vif-bridge/network-bridge) is in operation. The symptom is that the dom0 base system loses all network connectivity to the outside world while the two guest instances function perfectly well. As far as we can tell, we

Hi all, Can someone say me the theoretic way of packet in the kernel. When the packet will be send to a IMQ device? When the packet arrives to post routing time? When operation of NAT occur? befor or later that the packet will send to net device? Thanks Bye Simone -- Email.it, the professional e-mail, gratis per te: http://www.email.it/f Sponsor: Problemi di Liquidità? Con Logos