Re: Getting error ioctl SIOCSARP: Network is unreachable

Tim Peiffer <peiffer@nts.umn.edu> Fri, 17 May 1996 19:33 UTC

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Date: Fri, 17 May 1996 15:30:37 -0400
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From: Tim Peiffer <peiffer@nts.umn.edu>
To: Multiple recipients of list <dhcp-v4@bucknell.edu>
Subject: Re: Getting error ioctl SIOCSARP: Network is unreachable
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Without seeing configuration files, etc., my interpretation is that
you are overloading the datagram.  Try not overstuffing the datagram
and use a suitable testing client  to make sure that you are getting
back everything that you want.  While the dhcp datagram is extendable, 
the bootp datagram is limited to 576 bytes.  As a practical matter, 
one can only deliver a fixed number of bootp options.  As an example, 
after we hand out a bare minimum number of fields in the datagram, 
I can only deliver a combined license key (T133) before before the
datagram gets too big.


Tim Peiffer 	    	    	    	peiffer@nts.umn.edu
Networking and Telecommunications Services
University of Minnesota                 +1 612 626 7884 desk
130 Lind Hall                           +1 612 625 0006 problems
207 Church St SE                        +1 612 626 1002 fax
Minneapolis MN 55455-0134, USA          

> 
> 
> Hello:
> 
> I've installed dhcp-3.3.6 on SunOS 4.1.4. It seems working fine allocating
> IP adresses. But I am getting the msgs from server which I can't interpret.
> 
>  ioctl SIOCSARP: Network is unreachable
> 
> and also 
> 
> dynamic1.athena.law.columbia.edu: No room for "ns" option
> 
> Recently, I've ported dhcp-3.3.7 but the same problem remains. This server
> gives the msg
> 
> ioctl SIOCSARP: Operation not supported on socket
> 
> 
> Although, I get these errors the clients get IPs. Such error msgs I get only
> for bootp clients, while for Win95 clients it seems working OK.
> 
> Coould you help?
> 
> Thanks
> 
> ========================
> Boris Niyazov
> IT Department
> Columbia Law School
> 
>