Re: Re: Request for Advices on the draft draft-cha-ipv6-ra-mo-00.txt

2008-10-07 Thread HYUN WOOK CHA
Hello, Brian. As I presented last IETF 6MAN meeting, our draft aims to provide automatic revocation of DHCPv6 clients in case that invocation of clients can be done in accordance with the RFC2462. Thus, requirement of our security model is that we should not intoduce additional threats to the

RE: Re: Request for Advices on the draft draft-cha-ipv6-ra-mo-00.txt

2008-10-07 Thread Bernie Volz (volz)
It would seem quite dangerous to enable/disable DHCPv6 clients arbitrarily based on bit settings in un-protected RA messages. This support already exists with the definition of the M O bits. Setting these in an RA means run DHCPv6. As Joseph pointed out, the draft defines a mechanism to stop

Re: RE: Re: Request for Advices on the draft draft-cha-ipv6-ra-mo-00.txt

2008-10-07 Thread HYUN WOOK CHA
So, given this, I can't see how this adds any security issues that don't already exist (ie, to cause DHCPv6 to be run). If DHCPv6 is not requested by valid RAs, all rogue RAs can do is cause DHCPv6 to be run. Right. In addition, though the revocation method in the draft, clients invoked by