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Re: Multiple internet providers
On Jul 26, 2011, at 6:19 AM, Dima Veselov wrote:
> I have a trivial problem, but found very few information on the internet.
This isn't a trivial problem, actually, but OK. :-)
> I have multiple internet providers, connected to one NetBSD 5.1 box. What is
> the best practice for serving these? The result I want to have:
> Incoming connections are replied by the destination address
> Outgoing connection is used depending on source address
> As I understand - only Linux have an ability of two default routes.
> What is the best practice for that? Is there a need of using some daemon?
Do you have an ASN and a routable address block, or are your IPs are being
delegated to you from your ISP(s)? If the former, then you ought to look into
BGP/EGP peering with your upstream providers to provide proper multihomed
Perhaps this is a language nitpick, but Linux doesn't provide multiple default
routes-- there is only one default route for a given routing FIB, but you can
set up different routing tables per interface and/or use a policy routing
mechanism like iproute2. FreeBSD has the equivalent with setfib, but I'm not
sure whether that is available in NetBSD. However, you can still implement
source-based routing using PF and route-to:
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