[104696] in North American Network Operators' Group
Re: IPv4 Router Alert Option
daemon@ATHENA.MIT.EDU (Robert E. Seastrom)
Fri May 23 15:30:04 2008
To: Ron Bonica <rbonica@juniper.net>
From: "Robert E. Seastrom" <rs@seastrom.com>
Date: Fri, 23 May 2008 15:29:55 -0400
In-Reply-To: <48371432.3050609@juniper.net> (Ron Bonica's message of "Fri,
23 May 2008 15:00:02 -0400")
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Ron Bonica <rbonica@juniper.net> writes:
> Folks,
>
> It is my belief that many ISPs, will not accept datagrams containing the
> Router Alert IP option from customers. Do I have that right?
I think that in general, it is safe to say that most folks who run
Internet backbones do not care what options you have on IP packets and
are not filtering anyway. Heck, I've never encountered anything
beyond unicast RPF in terms of SP filtering, and even *that* is not
especially prevalent. If he's reading, Dave Katz will probably be
disappointed to hear that I couldn't even remember what that option
did without referring to RFC2113.
> I am asking so that I might better evaluate Internet drafts that would
> require ISPs to accept such packets.
Do these drafts actually exist, or are they merely hypothetical?
---rob
