$ ip netns exec ns1 ip link delete veth1
 $ ip link add name veth1 type veth peer name veth2
 $ ip link
 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 52:54:00:01:b0:24 brd ff:ff:ff:ff:ff:ff
 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 52:54:00:02:e3:f1 brd ff:ff:ff:ff:ff:ff
 7: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether c6:27:2a:a8:06:ca brd ff:ff:ff:ff:ff:ff
 8: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 26:3e:ce:c5:de:de brd ff:ff:ff:ff:ff:ff

 $ ip -f inet addr show eth0
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 192.168.56.130/24 brd 192.168.56.255 scope global eth0
       valid_lft forever preferred_lft forever

 $ ip addr del 192.168.56.130/24 dev eth0
 $ brctl addbr br0
 $ ip addr add 192.168.56.130/24 dev br0
 $ ip link set br0 up
 $ ip -f inet addr show br0
 9: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
    inet 192.168.56.130/24 scope global br0
       valid_lft forever preferred_lft forever

 $ brctl addif br0 eth0
 $ brctl addif br0 veth1
 $ brctl show
 bridge name   bridge id           STP enabled   interfaces
 br0           8000.263ecec5dede   no            eth0