Re: [v6ops] draft-ietf-v6ops-reducing-ra-energy-consumption WGLC

[David Farmer <[e-mail]>]

> On Aug 30, 2015, at 16:59, David Farmer <[e-mail]> wrote:
> ...
> 4. Section "7. Security Considerations" should note frequent sending of Rouge Router Advertisements could also severely impact power consumption on battery-powered hosts, see RFC6104, Section 3 and RA-Guard [RFC6105] for mitigation of Rouge Router Advertisements.

Thinking about this a little bit more; most of the mitigation methods discussed in section 3 of RFC6104 are not effective for the power consumption issue, except 3.2 (which is RA-Guard) and 3.3 (ACLs).  The host would still see the Rouge RA messages with the other mitigation methods.  I also think it is important to note Rouge RAs can be caused by malicious activity or simply host misconfiguration.

So how about something like this;

7. Security Considerations

   The frequency of multicast Router Advertisement messages on a network will be 
   significantly increased with the addition of Rouge Router Advertisements [RFC6104]
   either from malicious activity or simply host misconfiguration.  RA-Guard [RFC6105] 
   or ACLs, as discussed in section 3.3 of RFC6104, effectively mitigate increased 
   power consumption on battery-powered hosts that would be caused by any Rouge 
   Router Advertisements.  

   While effective at ensuring proper default router information is delivered to hosts, 
   most of the other mitigation methods discussed in section 3 of RFC6104 do not 
   prevent the additional Router Advertisement messages from getting to hosts and 
   therefore do not mitigate the power consumption issue.  Furthermore, some of the 
   methods deliver even more Router Advertisement messages to hosts, exasperating 
   the power consumption issue.


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