$ sudo ip netns exec ns1 ip link set dev ns1-veth0 address 00:00:5E:00:53:01
$ sudo ip netns exec ns2 ip link set dev ns2-veth0 address 00:00:5E:00:53:02
</pre>
*確認
<pre>
$ sudo ip netns exec ns1 ip link show | grep "link/ether"
link/ether 00:00:5e:00:53:01 brd ff:ff:ff:ff:ff:ff link-netns ns2
$ sudo ip netns exec ns2 ip link show | grep "link/ether"
link/ether 00:00:5e:00:53:02 brd ff:ff:ff:ff:ff:ff link-netns ns1
</pre>