IPv4 source routing options and IPv6 Type 0 Routing Header

[sam_mailinglists at spacething.org (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, source-routing 
> was important to make sure your peer wasn't pointing default (or 
> similar) to you. With the advent of private (and far more limited) 
> bilateral peering as a preference to fabric based peering (at least 
> among the ones who set peering policies globally) this has become
> less of an issue.
>
> RFC 5095 aside.
>
>
Can someone give an example of how to use source routing to check a 
peers routing policy?

Thanks,

Sam