Re: Recovering from multiple routers advertising routes

2003-05-23 Thread Michael Richardson
Guys, go visit the IETF SEND WG: http://www.ietf.org/html.charters/send-charter.html Description of Working Group: Neighbor Discovery is the basic protocol by which IPv6 nodes discover their default routers on the local link, and by which nodes on a local link resolve IPv6 addresses to MAC layer

Re: Recovering from multiple routers advertising routes

2003-05-22 Thread Anthony DeRobertis
On Thu, 2003-05-22 at 03:27, Peter Cordes wrote: > > Sure, I suppose so, at least on hosts that can keep enough state. Though > > replacing a DHCP server would be a royal PITA! > > If you could get the private key out and use it in the new one, it would be > ok. Yep, but that's always the easy

Re: Recovering from multiple routers advertising routes

2003-05-22 Thread Peter Cordes
On Wed, May 21, 2003 at 11:31:48PM -0400, Anthony DeRobertis wrote: > On Wed, 2003-05-21 at 21:32, Peter Cordes wrote: > > On Wed, May 14, 2003 at 03:41:44PM -0400, Anthony DeRobertis wrote: > > > Couldn't you do (b) the way SSH handles server public keys? > > Sure, I suppose so, at least on hos

Re: Recovering from multiple routers advertising routes

2003-05-21 Thread Anthony DeRobertis
On Wed, 2003-05-21 at 21:32, Peter Cordes wrote: > On Wed, May 14, 2003 at 03:41:44PM -0400, Anthony DeRobertis wrote: > Couldn't you do (b) the way SSH handles server public keys? Sure, I suppose so, at least on hosts that can keep enough state. Though replacing a DHCP server would be a royal P

Re: Recovering from multiple routers advertising routes

2003-05-21 Thread Peter Cordes
On Wed, May 14, 2003 at 03:41:44PM -0400, Anthony DeRobertis wrote: > > On Wednesday, May 14, 2003, at 03:10 PM, Bill Cerveny wrote: > > >This was also the engineer's point -- he felt IPv4 DHCP was broken in > >this manner and this broken behavior was being perpetuated via IPv6 > >router advert

Re: Recovering from multiple routers advertising routes

2003-05-20 Thread Michael Richardson
> "Bill" == Bill Cerveny <[EMAIL PROTECTED]> writes: Bill> This was also the engineer's point -- he felt IPv4 DHCP was broken Bill> in this Bill> manner and this broken behavior was being perpetuated via IPv6 Bill> router Bill> advertisements. IPv4 DHCP is broken tha

Re: Recovering from multiple routers advertising routes

2003-05-15 Thread matthew . ford
Bill, You should check out the work of the Secure Neighbour Discovery (SEND) Working Group in the IETF which is working hard right now to address this issue, and also the broader issue of securing the Neighbour Discovery procedure in IPv6. http://www.ietf.org/html.charters/send-charter.html Rega

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Bernd Eckenfels
On Wed, May 14, 2003 at 10:56:48AM -0400, Bill Cerveny wrote: > changes caused by the router advertisements. "route" failed in my attempts > to remove the /64 blocks. I ultimately got rid of the routing problems by > rebooting the Linux systems. output of the route command and the error message

RE: Recovering from multiple routers advertising routes

2003-05-14 Thread Jeroen Massar
Bill Cerveny [mailto:[EMAIL PROTECTED] wrote: > Fixing the routing/addressing problem created by these > routers was easy to > fix on my Windows XP laptop by rebooting the laptop. I Evil do-er! :) C:\> ipv6 renew or append an interface number to it to only renew RA's on that interface jus

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Anthony DeRobertis
On Wednesday, May 14, 2003, at 03:10 PM, Bill Cerveny wrote: This was also the engineer's point -- he felt IPv4 DHCP was broken in this manner and this broken behavior was being perpetuated via IPv6 router advertisements. Well, the only solutions are really: a) Static adressing b)

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Bill Cerveny
This was also the engineer's point -- he felt IPv4 DHCP was broken in this manner and this broken behavior was being perpetuated via IPv6 router advertisements. I did find a mention of something similar to this problem in an IETF Internet-draft for proposed extensions to router advertisements a

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Anthony DeRobertis
On Wednesday, May 14, 2003, at 10:56 AM, Bill Cerveny wrote: My questions: - What is the recommended set-up for Linux servers which are not set-up as routers? In my opinion, allowing a server to add addresses/routing every time a router starts advertising rogue addressing blocks is dangerous and

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Jeremy T. Bouse
Another thing you could have tried is if the engineers in question still had the routers online or you did still have a legitimate Cisco router sending out RAs is to setup the rouge RA prefixes with a lifetime of 0... Let it run for awhile with this new lifetime and any IPv6-capable box wou

Re: Recovering from multiple routers advertising routes

2003-05-14 Thread Noah Meyerhans
On Wed, May 14, 2003 at 10:56:48AM -0400, Bill Cerveny wrote: > - What is the recommended set-up for Linux servers which are not set-up as > routers? In my opinion, allowing a server to add addresses/routing every > time a router starts advertising rogue addressing blocks is dangerous and > shou

Recovering from multiple routers advertising routes

2003-05-14 Thread Bill Cerveny
At my office there are a bunch of engineers (including myself) who like to experiment with routers. In one case, an engineer connected one interface of the Cisco router to the general office network and turned on IPv6 with a site-local address. My Linux and WinXP boxes received the router adve