quick howto netns

gistfile1.txt

assumption: your machine has eth0 bridged to br0 already

(everything as root)


create a new netns:
-------------------

ip netns add foo
ip netns exec foo bash

get pid of that bash:
    echo $$
    17484

(don't terminate that bash, it holds open your netns.)


create a veth device pair:
--------------------------

foolink will be the host side, foointernal will be the netns side:

from a "host" shell:

ip link add name foolink type veth peer name foointernal

link the netns/veth:
--------------------

ip link set foointernal netns 14784 # pid of the bash from above
ip link set foolink up
brctl addif br0 foolink


if you have an ipv6 network, your foointernal device should already have an ipv6 address by now.
use ip addr add to give it an ipv4 as well (or try dhclient).