Unwanted RA on LAN

Rod James Bio rjubio at gmail.com
Wed Mar 9 08:18:43 CET 2011

On Wednesday, 09 March, 2011 03:14 PM, Tim Chown wrote:
> On 9 Mar 2011, at 07:05, Rod James Bio wrote:
>> Hello,
>>    I've been seeing 2002:ca5a::/32 advertise on our LAN recently, 
>> actually it's two /64 advertised by two machine. I was wondering if 
>> anybody had any past experience on this? I would like to know what 
>> application or operating system feature is causing this so I could 
>> disable it and remove this RA's on our LAN. Already search Google 
>> about this but no luck in finding anything. Below is the output of 
>> /ifconfig /on my workstation. Thank you.
>>        inet6 addr: 2002:ca5a:9f36:4:216:eaff:fec5:ebc/64 Scope:Global
>>        inet6 addr: 2002:ca5a:9f5a:9:216:eaff:fec5:ebc/64 Scope:Global
>> Rod
> Almost certainly a Windows box with ICS turned on.    See RFC6104 on 
> rogue RAs.
> Try http://ramond.sourceforge.net as one way to deprecate them (albeit 
> a hack), otherwise wait for implementations of RA Guard (RFC6105), or 
> add ACLs to filter the RAs on switch ports that don't have router 
> interfaces upstream.
> Tim
Got it. Thanks for the quick reply Tim.
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