How to add a bridge subnet to exits system?

[magic1000]

I had a subnet, an it work fine:

---
auto vmbr0
iface vmbr0 inet static
address 123.123.123.123
netmask 255.255.255.0
bridge_ports none
bridge_stp off
bridge_fd 0
---

now I want add 1 more subnet, vmbr1
but I don't want edit /etc/network/interfaces, because I will need restart networking.
How to add bridge subnet by command?

 

[snowman66]

Use search option. Search for "brctl".

ifconfig eth1 up
brctl addbr vmbr1
brctl addif vmbr1 eth1
ifconfig vmbr1 up