Yes, we do this for several clients. We route them a smaller than 24 block over a tunnel. Which bring up an interesting question. Will there be a time where the smallest block size recognized will be something smaller than a /24? /25, /26 ? Most modern routers have the horsepower to deal with larger route tables. I know of dozens, if not hundreds of small ISPs that can’t participate in BGP because they don’t have big enough blocks. Many others who do are not utilizing their /24 so it just kinda sits there. They have to have their provider assigned IP space be advertised. Does not help them getting on to an IX though. I know I know IPV6 is the answer not going to accepting smaller blocks. Justin Wilson j2sw@mtin.net www.mtin.net www.midwest-ix.com www.fd-ix.com
On Jan 4, 2018, at 5:31 PM, Michael Hallgren <mh@xalto.net> wrote:
Thanks Bill. Kinda ugly, but OK I see... Prefer v6 ;-) mh
Le 4 janv. 2018 à 23:17, à 23:17, William Herrin <bill@herrin.us> a écrit:
On Thu, Jan 4, 2018 at 5:07 PM, Michael Hallgren <mh@xalto.net> wrote:
Am I missing something? What's the trigger for doing tunneling here?
With "IP address leasing" you aren't connected to the network which holds the address registration.
For leasing less than a /24, they need a plan other than "advertise to your peers with BGP" because even if your peer accepts a /27, most of their peers will not.
Regards, Bill Herrin
-- William Herrin ................ herrin@dirtside.com bill@herrin.us Dirtside Systems ......... Web: <http://www.dirtside.com/>