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Published on 2010-03-20T22:49:42Z
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I'm looking for some Linux code to find an IP address from an Ethernet adress. I suppose I have to do some inverse ARP trickery but I don't find any example...
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I have been trying to get an Olitec Wifi N USB dongle to work. At first it lit up but wouldn't connect.
A little Googling suggested that it would need ndiswrapper to make it work. After installing and trying to add driver with ndisgtk, I got the error message FATAL: Module ndiswrapper not found.…
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Hello ServerFault,
I am trying to forward port 444 from my cisco router to my Web Server (192.168.0.2).
As far as I can tell, my port forwarding is configured correctly, yet no traffic will pass through on port 444.
Here is my config:
!
version 12.3
service config
no service pad
service tcp-keepalives-in
service…
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This is a weird one, so I'll try to explain in as much detail as I can so I'm giving the whole picture.
As I've mentioned in my other questions, I'm in the process of setting up a new Cisco 881 as my WAN router and NAT firewall. I'm facing an issue where NAT NVI rules that I have configured are not…
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Is that possible to bind all available public ip addresses on a server to one Postfix instance as its outgoing ip pool and let it choose a random ip or specified ip from the pool each time it sends out an email?
If above is not possible, can it be configured to listen on one public ip address per…
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Hi,
I am trying to optimize below code for SIMD operations (8way/4way/2way SIMD whiechever possible and if it gives gains in performance) I am tryin to analyze it first on paper to understand the algorithm used. How can i optimize it for SIMD:-
void idct(uint8_t *dst, int stride, int16_t *input…
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I recently acquired a client that has a strange ARP caching issue on one of thier servers.
I have a server that will eventually start turning it's dynamic ARP entries into static ARP entries. This causes problems because when the machine that has a static ARP entries on this server receives a new…
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I have some pretty dumb IP devices on a subnet with my Ubuntu server, and the server receives streaming data from each device. I have run into a problem in that when an ARP request is issued to the device while it is streaming data to the server, the request is ignored, the cache entry times out and…
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We have been using HAProxy along with heartbeat from the Linux-HA project. We are using two linux instances to provide a failover. Each server has with their own public IP and a single IP which is shared between the two using a virtual interface (eth1:1) at IP: 69.59.196.211
The virtual interface…
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I have a need for some C or C++ code, compilable under Linux, to be able to take a list of IP addresses of some arbitrary number of remote hosts machines and obtain a ethernet MAC address for each one. These host machines may be on the same subnet or they could be on a different subnet behind a router…
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I have a fedora 18 VM that stops updating the arp table on eth1 after running for a number of hours to days. There are other VMs on the same hypervisor that can access all of the same networks without issue. A tcpdump of the offending NIC shows only ARP broadcasts but no responses. None of the other…
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