Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-30 Thread John Osmon
On Mon, Jun 30, 2008 at 06:35:12PM +0100, Sam Stickland wrote: > Can someone give an example of how to use source routing to check a > peers routing policy? Channelling from a similar private conversation I had many years ago: Seeing if packets directed to prefixes that you're not announcing

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-30 Thread Sam Stickland
Deepak Jain wrote: Quite a few times it has been mentioned to me that some peering agreements require support for the IPv4 source routing options. I was wondering whether this is still the case for some ISPs, or it is not the case anymore. Before we decommissioned our last open peering fabric

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-29 Thread Fernando Gont
At 03:44 a.m. 26/06/2008, Randy Bush wrote: source routing is still requested and sometimes mandated at inter-as borders. for the reasons deepak stated. note that this does not expose any vulnerability. source routing is only dangerous to hosts. Well, it can be used as an amplification mecha

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Randy Bush
sorry to pick this up so late. source routing is still requested and sometimes mandated at inter-as borders. for the reasons deepak stated. note that this does not expose any vulnerability. source routing is only dangerous to hosts. > Yes, sorry. The question should have been: Has IPv6 Type 0 R

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Joe Abley
On 25 Jun 2008, at 21:44, Fernando Gont wrote: (In any case, I guess Type 0 Routing Header could still be used, in the same way that v4 source-routing was still being used even after many IP implementations had decided to filter it by default?) Between adjacent, consenting routers, you ca

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Fernando Gont
At 05:43 p.m. 25/06/2008, Deepak Jain wrote: Quite a few times it has been mentioned to me that some peering agreements require support for the IPv4 source routing options. I was wondering whether this is still the case for some ISPs, or it is not the case anymore. Before we decommissioned o

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Joel Jaeggli
Fernando Gont wrote: Hello, folks, Quite a few times it has been mentioned to me that some peering agreements require support for the IPv4 source routing options. I was wondering whether this is still the case for some ISPs, or it is not the case anymore. I haven't observed it in the recent

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Deepak Jain
Quite a few times it has been mentioned to me that some peering agreements require support for the IPv4 source routing options. I was wondering whether this is still the case for some ISPs, or it is not the case anymore. Before we decommissioned our last open peering fabric, source-routing wa

Re: IPv4 source routing options and IPv6 Type 0 Routing Header

2008-06-25 Thread Joe Abley
On 25 Jun 2008, at 03:55, Fernando Gont wrote: Quite a few times it has been mentioned to me that some peering agreements require support for the IPv4 source routing options. I was wondering whether this is still the case for some ISPs, or it is not the case anymore. I was also wondering