[LARTC] two upstreams without nat

Linux Advanced Routing and Traffic Control

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im in the process of configurating our network to have two upstream providers, it will be loadbalanced
under normal operation and a complete failover if one of the lines would fail.

internet		internet
  |			  |
border			border
  |                       |
      |- core router - |
	     |
	    lan


the "problem" im having is that i will not do nat on the core router, but on the border routers. 
the multipath default route is on the core router. from what i understand, could be totally wrong,
you have to have nat, at least connection tracking on the core to make the multipath route per
flow and not per packet.

any insight of this?


-tomas bonnedahl





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