[mythtv-users] OT: default routes

[Hika van den Hoven]

Hoi Simon,

Wednesday, September 23, 2015, 4:16:53 PM, you wrote:

> Hika van den Hoven <hikavdh at gmail.com> wrote:

>> The VPN server is running on the router and there are two VPNs: One a
>> remote network with a changing internet IP and the other my roaming
>> laptop or tablet.

> Are these both "dial in" then ?

> That may simplify things a bit. AIUI, this is what should happen :
> 1) Other endpoint "dials in" to the fixed IP
> 2) The VPN "system" should respond using that fixed IP in the
> source address of the outgoing packets.

> At present, 3) it fails as the default route is via the other ISP
> so the outbound packets most likely (if it's a good netizen) get
> dropped by your ISP as "impossible". So what you need is a route
> (based on source address) to pass that traffic via the correct interface.

> You can probably get by with nothing more than the basic routing
> rules that say "source IP is a.c.b.d, route via this table", and
> create the extra routing table to route that traffic via the ISP
> with fixed IP address. Leave the default gateway pointing at the new
> ISP and that'll handle all traffic other than that which originated at the fixed address.

> So I *think* that if you simply copied the routes and rules from my
> original post (substituting the various IPs etc) it'll just work.
> And of course, setup the VPN/PPP system so it adds/removes the
> routes for the far end to an appropriate routing table - I think
> main would be the default, and also suitable as it's checked early on in the rules.

> _______________________________________________

Yes! that's how far I was. But the router uses busybox for the ip
command and that's dressed down. busybox ip route doesn't know 'table'
or 'list'. I might have to add the full ip command to the router. And
that will take quite some puzzling.


Tot mails,
  Hika                            mailto:hikavdh at gmail.com

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