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ioctl SIOCGARP failed! errno: 6

Newsgroups	comp.os.linux.development.system
Date	2018-06-08 10:24 -0700
Message-ID	<5341a907-dabd-43e6-bdb8-2725edb893ad@googlegroups.com> (permalink)
Subject	ioctl SIOCGARP failed! errno: 6
From	Ohm Trivedi <ohmtrivedi@gmail.com>

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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)

I can't find any resources on internet which can tell me what this error is about. Hope someone can help me out here. I am not very experienced in Linux/C++.

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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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