Re: [PATCH net-next 2/2] selftest: net: add icmp reply address test

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On 11/2/19 10:09 AM, Francesco Ruggeri wrote:
> On Sat, Nov 2, 2019 at 8:11 AM David Ahern <dsahern@xxxxxxxxx> wrote:
>> On 11/2/19 9:08 AM, Francesco Ruggeri wrote:
>>> I am only using macvlans for N1 in the ipv6 test, where there are 3 nodes.
>>> How do I use veths for that?
>>
>> checkout the connect_ns function. It uses veth to connect ns1 to ns2.
> 
> I apologize in advance  for being slow ...
> I have 3 namespaces that have to share the same LAN, I am not trying
> 1-1 connections among those namespaces.
> 

How would you cable this if it were an actual network with physical nodes?
- bridge on R1 (since it is the gw for H1), with connections to R2 and
H1 into the bridge
- second connection between R1 and R2
- connection between R2 and H2

For the simulation, network namespaces represent physical nodes, veth
pairs act like a cable between the nodes / namespaces and the bridge
makes the LAN.



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