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examples/gnrc_networking_subnets: update documentation

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Benjamin Valentin 2021-09-28 17:01:43 +02:00
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examples/gnrc_networking_subnets/README.md
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# Auto-configuration for nested subnets on a (simple) tree topology
# Auto-configuration for nested subnets on a tree topology
This example demonstrates IPv6 subnet auto-configuration for networks on a
tree topology.
This example demonstrates IPv6 subnet auto-configuration for networks on
a tree topology.
This allows to connect multiple links with individual subnets and route
between them.
Each link can have an arbitrary number of hosts, but there can be only
a single router on each link.
Each link can have an arbitrary number of hosts and routers.
Routers can have multiple interfaces to connect different downlinks.
![](../../doc/doxygen/src/gnrc_ipv6_auto_subnets.svg)
If you can ensure there is only a single router on each link, you can
skip the coordination protocol and save some resources by enabling
the `gnrc_ipv6_auto_subnets_simple` module.
![](../../doc/doxygen/src/gnrc_ipv6_auto_subnets_simple.svg)
Routers can still have multiple downstream interfaces but there can be
only a single router in each subnet.
## Setup on native
To simulate such a network on `native` a `setup_taps.sh` script is provided that