Re: [Vserver] arping inside guest

From: Herbert Poetzl <>
Date: Wed 25 Oct 2006 - 15:01:23 BST
Message-ID: <>

On Tue, Oct 24, 2006 at 10:46:06AM -0400, Chuck wrote:
> i am trying to use the arping utility inside a guest. i have a ccap of
> raw_icmp already for something else in the guest. i keep getting this
> error"
> arping: socket: Operation not permitted

not unexpected, arp is not icmp :)

> i looked through the caps listing but can't find anything obvious that
> I should use..

you need the 'evil' CAP_NET_RAW (bcaps) for this to
work, as the arp ping utility generates raw packets
on a raw socket ...

> any suggestions?
> this is for a nagios monitoring setup where we cannot ping certain ip
> addresses because of their firewall settings, so i thought we could
> still monitor those using arping.

makes it insecure, why not use a tcp or udp type
ping to a known good port?


> --
> Chuck
> _______________________________________________
> Vserver mailing list
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Received on Wed Oct 25 15:02:57 2006

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