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RIOT/tests/lwip_sock_udp/README.md
Martine Lenders 29842bb5e4 netdev2: rename to netdev and remove gnrc_netdev 
With some minor hand-edits I used the following chain of commands:

```sh
git rm sys/include/net/gnrc/netdev.h
git grep --name-only -i netdev2 | \
        xargs sed -i -e 's/^\(NETDEV\)2\(.*\)\( [("]\)/\1\2 \3/g' \
                     -e 's/\(netdev\)2\(.*\)\( \/\*\*<\)/\1\2 \3/I' \
                     -e 's/\(netdev\)2/\1/gI'
git add -p
git commit --amend
git ls-tree --full-tree -r HEAD --name-only | \
        grep "netdev2" | xargs -I'{}' dirname '{}' | uniq | \
        grep "netdev2" | while read dir; do
                new_dir="$(echo "$dir" | sed "s/netdev2/netdev/g")"
                git mv -f "$dir" "$new_dir"
        done
git commit --amend
git ls-tree --full-tree -r HEAD --name-only | \
        grep "netdev2" | while read file; do
                new_file="$(echo "$file" | sed "s/netdev2/netdev/g")"
                git mv -f "$file" "$new_file"
        done
git commit --amend
git grep --name-only "\<drivers_netdev_netdev\>" | \
        xargs sed -i "s/\<drivers_netdev_netdev\>/drivers_netdev_api/g"
git add -p
git commit --amend
```
2017-03-15 09:31:20 +01:00

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Tests for lwIP's sock_udp port

This tests the sock_udp port of lwIP. There is no network device needed since a virtual device is provided at the backend.

These tests test both IPv4 and IPv6 capabilities. They can be activated by the LWIP_IPV4 and LWIP_IPV6 environment variables to a non-zero value. IPv6 is activated by default:

make all test
# or
LWIP_IPV6=1 make all test

To just test IPv4 set the LWIP_IPV4 to a non-zero value (IPv6 will be deactivated automatically):

LWIP_IPV4=1 make all test

To test both set the LWIP_IPV4 and LWIP_IPV6 to a non-zero value:

LWIP_IPV4=1 LWIP_IPV6=1 make all test

Since lwIP uses a lot of macro magic to activate/deactivate these capabilities it is advisable to test all three configurations individually (just IPv4, just IPv6, IPv4/IPv6 dual stack mode).