On Tue, 29 Aug 2000, John Fraizer wrote:
Name-based virtual hosting does not work in many, MANY cases. Beyond this, if you have multiple customers on a single IP address and one of them is an idiot and spamvertizes their website, several providers have a policy of nullrouting the /32. Now, not only does it kill a single site but, potentially hundreds!
To be fair, that seems like much better argument against nullrouting website /32s in retaliation for spam than against using the same IP address for multiple websites where feasable. There are plenty of things people have done in retaliation for spam, including blocking /32s, whole /24s, whole CIDR blocks, or whole ASNs. With any of these approaches there are potential problems with inadvertently blocking things that shouldn't be blocked, and anybody doing such blocking should think about that and figure out whether the blocking is really something they want to do. If an ISP intentionally or inadvertently blackholes something their customers think they're paying for access to, that really sounds like a problem with the ISP doing the blocking, that the ISP can easily fix if they want to (and that can cause their customers to go elsewhere if they don't), rather than a problem at ARIN or at the web hosting company. That's not to say that this ARIN policy doesn't have other problems, but many of them have already been well covered in this discussion. -Steve -------------------------------------------------------------------------------- Steve Gibbard scg@gibbard.org