Public bug reported:
Hello. Because on Ubuntu 12.04 LTS an ArpON package is pretty outdated
(ver. 2.0-2.1 0) I've decided to use a version from a Vivid release -
2.7.
It seems that ArpON ver. 2.7 has a bug related to a DARPI anti Arp
Poisoning techniques. Because I am using a DHCP method to obtain an IP
address I needed to use a DARPI method (Dynamin Arp Inspect.) instead of
SARPI (Static Arp Inspect). After installation via 'apt-get' utility,
configuring "arpon" file from '/etc/default/' directory and uncomment
line responsible for a DARPI method, ArpON failed to start with a
following error:
$ sudo /etc/init.d/arpon start
* Starting anti ARP poisoning daemon arpon
20:38:55 PID = </var/run/arpon.pid>
/usr/bin/arpon: invalid option -- 'd' [fail]
For a DARPI method a line in the '/etc/default/arpon' file looks this
way: DAEMON_OPTS="-q -f /var/log/arpon/arpon.log -g -d". According to
the Ubuntu manpage[1] '-g' flag stands for "Works in logging mode",
since '-d' flag means "Manages Arp Cache dynamically". Everything should
work okay, but it does not. I've tried many possibilities,
configurations etc.
And it seems, that a new ArpON 2.7 version requires a '-D' flag instead
'-d'. So, now there must be the '-D' flag not '-d'. After this small
change everything started to work okay:
$ sudo /etc/init.d/arpon start
* Starting anti ARP poisoning daemon arpon
20:43:32 PID = </var/run/arpon.pid> [OK]
One more test, to be one hundred percent sure: after running
'/etc/init.d/arpon status' command, status of anti ARP poisoning daemon
arpon is [OK]. Here are some technical details:
* Ubuntu 3.2.0-98.138-generic-pae 3.2.75 ('cat /proc/version_signature' command
result)
* lsb_release -rd
Description: Ubuntu 12.04.5 LTS
Release: 12.04
* arpon: 2.7.2-1
By the way: ArpON sometimes crashed with "SIGSEGV in pthread_kill()"
(after user login), but I will have to create a new bug report.
Best regards.
_____________
[1] http://manpages.ubuntu.com/manpages/trusty/man8/arpon.8.html
** Affects: arpon (Ubuntu)
Importance: Undecided
Status: New
** Tags: arpon darpi
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https://bugs.launchpad.net/bugs/1540807
Title:
ArpON ver. 2.7: the DARPI and -d (--darpi) flag bug.
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