[CentOS-virt] incoming works out does not (prolly a newbie question)

[compdoc]

Well, on my 192.168.20.x mask 255.255.255.0 network, one server's working
config files are:

Ifcgf-br1:
DEVICE=br1
TYPE=Bridge
BOOTPROTO=none
ONBOOT=yes

Ifcgf-br2:
DEVICE=br2
TYPE=Bridge
BOOTPROTO=none
ONBOOT=yes

ifcfg-eth0:
# Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
DEVICE=eth0
ONBOOT=yes
HWADDR=xx:xx:xx:xx:xx:xx
BOOTPROTO=none
BROADCAST=192.168.20.255
IPADDR=192.168.20.30
NETMASK=255.255.255.0
NETWORK=192.168.20.0
GATEWAY=192.168.20.1
TYPE=Ethernet

ifcfg-eth1:
# Intel Corporation 82541PI Gigabit Ethernet Controller
DEVICE=eth1
BOOTPROTO=none
HWADDR=xx:xx:xx:xx:xx:xx
ONBOOT=yes
BRIDGE=br1
TYPE=Ethernet

ifcfg-eth2:
# 3Com Corporation 3c905C-TX/TX-M [Tornado]
DEVICE=eth2
BOOTPROTO=none
HWADDR=xx:xx:xx:xx:xx:xx
ONBOOT=yes
BRIDGE=br2
TYPE=Ethernet