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Re: ioctl SIOCGARP failed! errno: 6

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From	Rainer Weikusat <rweikusat@talktalk.net>
Newsgroups	comp.os.linux.development.system
Subject	Re: ioctl SIOCGARP failed! errno: 6
Date	Fri, 08 Jun 2018 20:32:34 +0100
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Ohm Trivedi <ohmtrivedi@gmail.com> writes:
> I am a graduate student and I am trying to use this tool, Hershelplus (https://github.com/zk7/hershelplus/tree/master/multi-platform), for OS fingerprinting.
>
> The tool attempts to send an ARP request to destination MAC, but it fails. The output is as follows:
>
> ohmtrivedi@ohm-HP-ENVY:~/Documents/ms-thesis/hershelplus$ sudo ./hershelplus 420OS_db.txt 420OS_mapping.txt 186.32.55.31 80
>
> Reading from 420OS_db.txt...
> Stored 21000 signatures in map
> Starting Live fingerprinting of 186.32.55.31:80...
> Listing system adapters:
>
> 1. enx00e151b0014d at 10.15.15.111
>
> 2. lo at 127.0.0.1
>
> Enter the adapter number between 1 and 2: 1
>
> -----------------------------------------------
> Opening device enx00e151b0014d
> Adapter enx00e151b0014d opened successfully
> Local MAC Address Is: 00--31-81--80-01-77
> Local IP: 10.15.15.111
> ioctl SIOCGARP failed! errno: 6
> Creation of Send Packet failed
> Error getting fingerprint
>
> The error "ioctl SIOCGARP failed! errno: 6" is coming from file
> LiveFingerprinter.cpp, line#
> 600. (https://github.com/zk7/hershelplus/blob/master/multi-platform/LiveFingerprinter.cpp)

The headers /usr/include/asm-generic/errno-base.h and
/usr/include/asm-generic/errno.h defined macros for all system error
numbers and also list the standard error messages associated with them
in comments. In this case, that's

#define ENXIO            6      /* No such device or address */

(from errno-base.h)

The kernel returns this if there was no ARP-table entry for the address
whose ARP-table entry was supposed to be queried.

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Thread

ioctl SIOCGARP failed! errno: 6 Ohm Trivedi <ohmtrivedi@gmail.com> - 2018-06-08 10:24 -0700
  Re: ioctl SIOCGARP failed! errno: 6 Rainer Weikusat <rweikusat@talktalk.net> - 2018-06-08 20:32 +0100
  Re: ioctl SIOCGARP failed! errno: 6 Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-06-08 19:42 +0000
    Re: ioctl SIOCGARP failed! errno: 6 Ohm Trivedi <ohmtrivedi@gmail.com> - 2018-06-08 13:48 -0700
      Re: ioctl SIOCGARP failed! errno: 6 Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-06-09 07:24 +0000
        Re: ioctl SIOCGARP failed! errno: 6 Ohm Trivedi <ohmtrivedi@gmail.com> - 2018-06-09 18:53 -0700
          Re: ioctl SIOCGARP failed! errno: 6 Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-06-10 06:05 +0000
          Re: ioctl SIOCGARP failed! errno: 6 Rainer Weikusat <rweikusat@talktalk.net> - 2018-06-10 17:54 +0100
  Re: ioctl SIOCGARP failed! errno: 6 Ohm Trivedi <ohmtrivedi@gmail.com> - 2018-06-08 13:45 -0700
    Re: ioctl SIOCGARP failed! errno: 6 Rainer Weikusat <rweikusat@talktalk.net> - 2018-06-08 22:24 +0100

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