similar to: ARP entry problem?

Hello, I know that there are devices which are not working with arp. For example, the loopback device. I was wondering whether it is possible to create neighbours in a NUD_NOARP state; so that "ip neigh show" will show such neighbours where their state is NUD_ARP. I made some tests with the loopback device , but could not find such a way to cause it to appear as NUD_NOARP. Also if I

hi all, i am getting a lot of neighbour table overflow in my syslog file... we use slavkware8.1 with kernel2.4.19 squid2.5s1 iptables1.2.7a & iproite-ss020116.. there are two providers & this box has 5 ethernet and i havent seen it handle going less that 2.5mb traffic even at off peak hours !.. the kernel was _NOT_ configured with arp daemon support.. Dec 7 09:11:32 ICG last message

--kXdP64Ggrk/fb43R Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello everyone, I''m using Shorewall 1.2.12-1 on Debian 3.0, with the 2.4.17 kernel. I am seeing some interesting log entries, and after reading the documentation at Google and netfilter.org I have a couple questions. To begin, here are the entries I am

OK please try the following patch [PATCH] neighbour: fix a race in neigh_destroy() There is a race in neighbour code, because neigh_destroy() uses skb_queue_purge(&neigh->arp_queue) without holding neighbour lock, while other parts of the code assume neighbour rwlock is what protects arp_queue Convert all skb_queue_purge() calls to the __skb_queue_purge() variant Use

Hi, I am getting below error on mailgw. it has 2 ethernets. eth0 is connected to internet, while eth1 is connected to LAN where there are about 300 PCs. Mar 12 09:14:00 gateway kernel: NET: 697 messages suppressed. Mar 12 09:14:00 gateway kernel: Neighbour table overflow. Mar 12 09:14:05 gateway kernel: NET: 660 messages suppressed. Mar 12 09:14:05 gateway kernel: Neighbour table overflow. Mar

Dear Dr. Bivand and R-users, I have a 5 by 5 grid, say, location[1:5,1:5], and I want to know the indices of 8 neighbours of each cell. For example, for location[2,2], its neighbour coordinates are [1,1:3], [2,1], [2,3] and [3,1:3]. Sometimes I also need to remove edge effects (torus = TRUE). I have tried "cell2nb" function in your spdep package. Here's my example: > neigh

Just started getting this. I tried the following by adding it to my etc/sysctl.conf: net.ipv4.neigh.default.gc_thresh1 = 4096 net.ipv4.neigh.default.gc_thresh2 = 8192 net.ipv4.neigh.default.gc_thresh3 = 8192 net.ipv4.neigh.default.base_reachable_time = 86400 net.ipv4.neigh.default.gc_stale_time = 86400 That pretty much locked things up. Then I tried another googled solution: echo 256 >

what is the limit on the arp cache entires ?! Does someone have very big LANs with linux-routers ? How big ? (i mean flat L2 network, not segmented) I want to know how much can my net can scale ? thanx _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Sorry this is the right message. Hi all, in my school I have: - two Netopia router for ADSL (perform NAT), - one linux box with 3 ethernet card I want to make a load balancing on the two ADSL line. I have configured the system as follow: The LAN interface, of the two ADSL router, have address (A) 192.168.0.254 (B) 192.168.2.254 The 3 ethernet card, on the linux box, have address: -eth2

Hi guys, Sorry if this is a little offtopic, but I was wandering what can one do to prevent/stop arp flooding ? Thanks, Alex -- This message has been scanned for viruses and dangerous content by LG-Network(http://www.lgnet.ro), and is believed to be clean.

On Fri, 2013-06-28 at 12:17 +0800, Joe Jin wrote: > Find a similar issue http://www.gossamer-threads.com/lists/xen/devel/265611 > So copied to Xen developer as well. > > On 06/27/13 13:31, Eric Dumazet wrote: > > On Thu, 2013-06-27 at 10:58 +0800, Joe Jin wrote: > >> Hi, > >> > >> When we do fail over test with iscsi + multipath by reset the switches

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 there. Regarding currently known problem as stated on http://syslinux.zytor.com/pxe.php: we should probably call the UDP receive function in the keyboard entry loop, so that we answer ARP requests. Here's another illustration of the problem, description of related pxelinux problem and workaround for both problems. Configuration: dhcp/tftp server -- 213.180.194.116 (00:1B:78:05:84:6C)

What is the cause for such a message while running kernel 2.6.1 on RH9 ? Neighbour table overflow. NET: 282 messages suppressed. Neighbour table overflow. Alex Iruc _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Hi, I try to set up - A centos 6 firewall - With proxy-arp (I know: arp is not supported in ipv6) with ipv6. Arp does not exist for ipv6. So I have added: sysctl -w net.ipv6.conf.default.proxy_ndp=1 To use the neighbor proxy facility. How to activate ipv6 forwarding? As far as I have found, this changed in RHEL6 from 6.1 (/etc/sysconfig/network) to 6.2 (/etc/sysctl.conf).

I've run into a problem on my KVM host where a single guest will be unreachable to other guests on the same host. This host has 2 bridged devices and guests assigned to each have the same issue. I've noticed that when I can't reach the problematic guest, the ARP entry for that system is incorrect. This issue seems to only be a problem about 75% of the time when making connections

Hello all, I need a virtual firewall/router solution. I''m thinking of a netscreen 1000 but I want to know if it can be done in Linux. Here is my idea: 1 Linux box 2 GigE interfaces 1 interface setup with a public IP address ($PUBIP) 1 interface setup with 802.1q VLAN trunking with 100 vlans assigned ($VLAN1-$VLAN100) a /25 subnet routed to $PUBIP from my core routers All $VLAN

Hello! I''ve noticed a strange thing: when a client system generates an arp query for an unexistent host, the routing cache entry is being made. My system is Fedora 2 with vanilla 2.6.11. the client is 10.1.1.2 with mask 255.255.0.0 the router/firewall is 10.1.1.1 with mask 255.255.255.0 Yes, the masks are different and this cannot be fixed easily. So, when the client generates ARP

On 10/30/2015 09:01 AM, Timothy Murphy wrote: > Johnny Hughes wrote: > >>> So I guess the strange IP address probably comes from some Lite-On device >>> somewhere in my house - maybe on the server itself, an HP MicroServer. >>> There are so many possible electronic culprits today. > >> You should be able to use nmap to scan the device. > > Thanks

Hi All, If I have a vlan-Id on an interface with an ipv6 address, then I am unable to ping a real router. The problem is that the Neighbour Solicitation originated from the Centos machine is missing the Vlan-Id in the packet. Therefore a real router will drop such a packet. I have tried this with Centos 4.7 and with Centos 5.5 with the same result. If I originate the first Neighbour