Re: [44net] Strange Broadcasts... - 44net

14 Jun 2015

44net-request(a)hamradio.ucsd.edu wrote:
...
  Subject:
 Re: [44net] Strange Broadcasts...
 From:
 Nigel Vander Houwen &lt;nigel(a)k7nvh.com&gt;
 Date:
 06/13/2015 09:30 PM

 To:
 AMPRNet working group &lt;44net(a)hamradio.ucsd.edu&gt;

 Rob,

 Thank you for making my point. The reason you cant use a 44/8 address for a tunnel
endpoint is because routing is broken.

 Nigel

I don't agree with you.
There is a problem with routing inside UCSD in that case, but there are other reasons why
that should not be done.
When you run an IPIP gateway on a source-address-filtered system (and in my opinion, ALL
user connections should be
soirce-address-filtered!!  ISP's that don't to that just suck!) you need to route
back traffic from net-44 to internet via
the gateway.  The only viable way of setting up policy routing rules to do that falls
apart when tunnel endpoints are
inside 44.0.0.0/8.   So that should just be prohibited.
(As Marius also explained, it is even worse when tunnel endpoints exist within subnets
that are also advertised as being gatewayed)

Rob