Yes, i want to implement something like arptables, but i need to filter also ethernet frame fields, so i can't use arptables.
I was thinking that it would be necessary to code a kernel module, but, for what i see, arptables does it and it's a user space aplication, so, what i need is the way to do it, i'll try arptables source code.
Thank you.
---------- Post updated at 11:45 AM ---------- Previous update was at 11:35 AM ----------
Ohhh no,
here's what i thought...
arptables uses a kernel module to block the arp table and allow data to it... Does anybody has a way better to to this?
hi,
What is the difference between UBC cache and Metadata cache ? where can i find UBC cache Hits and Metadata cache Hits in hp-ux?
Advanced thanx for the help. (2 Replies)
Dear all,
We are testing two of our servers for mq series connectivity. The scenario is, when one machine is shutting down it's services there are some scripts that do a dns update, which removes the ip address and relates it to the ip address of the other node on our dns server, and the update... (7 Replies)
Hi all
I am trying to understand the kernel memory management and require assistance in this regard. Kernel first creates the cache memory to perform any subsequent allocation to processes. I could not figure out how it is accomplished. Do kernel directly allocates any hardware cache or allocates... (0 Replies)
Hi all
I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc..
Do you know if in Linux is available a... (2 Replies)
18:45:47 # free -m
total used free shared buffers cached
Mem: 96679 95909 770 0 1530 19550
-/+ buffers/cache: 74828 21851
Swap: 12287 652 11635
Hi all. The below output is from a RHEL 4.5... (0 Replies)
Hi All,
could any one point out any open source test-suites for "File cache" testing and as well as performance test suites for the same. Currently my system is up with Linux/ext4.
Regards
Manish (0 Replies)
Hi,
We are working on OEL5.7 (Oracle Linux) OS. We have a server with 64GB RAM. When we issue free -m command which shows the used, available and cached space. Most of the space is shown in cached section, where as we are not really doing much activity on the server.
It's like cached is... (5 Replies)
Hi,
Can any one please help me increase the arp stale time of an ipv6 interface on linux platform ?
I have tried increasing the variable gc_stale_time but that doesnt work.
Thanks (2 Replies)
i wish to clear memory cache on a production box and i was wondering what is the worst that can happen if i do?
i already tested this on a backup server and everything seemed fine.
but i need to know from you experts what are the worst things that can happen when i run it on a real server:
... (5 Replies)
Discussion started by: SkySmart
5 Replies
LEARN ABOUT SUSE
arping
ARPING(8) System Manager's Manual: iputils ARPING(8)NAME
arping - send ARP REQUEST to a neighbour host
SYNOPSIS
arping [ -AbDfhqUV] [ -c count] [ -w deadline] [ -s source] -I interface destination
DESCRIPTION
Ping destination on device interface by ARP packets, using source address source.
OPTIONS -A The same as -U, but ARP REPLY packets used instead of ARP REQUEST.
-b Send only MAC level broadcasts. Normally arping starts from sending broadcast, and switch to unicast after reply received.
-c count
Stop after sending count ARP REQUEST packets. With deadline option, arping waits for count ARP REPLY packets, until the timeout
expires.
-D Duplicate address detection mode (DAD). See RFC2131, 4.4.1. Returns 0, if DAD succeeded i.e. no replies are received
-f Finish after the first reply confirming that target is alive.
-I interface
Name of network device where to send ARP REQUEST packets. This option is required.
-h Print help page and exit.
-q Quiet output. Nothing is displayed.
-s source
IP source address to use in ARP packets. If this option is absent, source address is:
o In DAD mode (with option -D) set to 0.0.0.0.
o In Unsolicited ARP mode (with options -U or -A) set to destination.
o Otherwise, it is calculated from routing tables.
-U Unsolicited ARP mode to update neighbours' ARP caches. No replies are expected.
-V Print version of the program and exit.
-w deadline
Specify a timeout, in seconds, before arping exits regardless of how many packets have been sent or received. In this case arping
does not stop after count packet are sent, it waits either for deadline expire or until count probes are answered.
SEE ALSO ping(8), clockdiff(8), tracepath(8).
AUTHOR
arping was written by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>.
SECURITY
arping requires CAP_NET_RAWIO capability to be executed. It is not recommended to be used as set-uid root, because it allows user to modify
ARP caches of neighbour hosts.
AVAILABILITY
arping is part of iputils package and the latest versions are available in source form for anonymous ftp ftp://ftp.inr.ac.ru/ip-rout-
ing/iputils-current.tar.gz.
iputils-021109 09 iINAON 2002 ARPING(8)