双网卡使用keepalive配置LVS的direct模式，只有一个IP生效（双线双IP）

生产环境
CentOS 6.2 2.6.32-220.7.1.el6.x86_64
eth0 ： 电信IP
eth1 ： 联通IP

配置文件（/etc/keepalived/keepalived.conf）如下：
global_defs {
router_id LVS-HA-1
}
vrrp_sync_group TEL {
group {
TELNET
}
}
vrrp_sync_group UNI {
group {
UNICOM
}
}
vrrp_instance TELNET {
state MASTER
interface eth0
mcast_src_ip 113.74.32.22
virtual_router_id 31
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass LVS-HA-1
}
virtual_ipaddress {
113.74.32.28
}
}
vrrp_instance UNICOM {
state MASTER
interface eth1
mcast_src_ip 112.97.66.22
virtual_router_id 32
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass LVS-HA-2
}
virtual_ipaddress {
112.97.66.28
}
}
virtual_server 113.74.32.28 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.192
persistence_timeout 50
protocol TCP
real_server 113.74.32.24 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 113.74.32.25 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
virtual_server 112.97.66.28 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.192
persistence_timeout 50
protocol TCP
real_server 112.97.66.24 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 112.97.66.25 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
结果只有电信的虚拟IP能正常访问，联通总是不通，日志里显示都是正常的。/var/log/message里的信息如下：
Apr 1 18:09:35 localhost Keepalived_vrrp: Registering Kernel netlink command channel
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Registering Kernel netlink reflector
Apr 1 18:09:35 localhost Keepalived_vrrp: Registering gratutious ARP shared channel
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Registering Kernel netlink command channel
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Opening file '/etc/keepalived/keepalived.conf'.
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Configuration is using : 20293 Bytes
Apr 1 18:09:35 localhost Keepalived_vrrp: Opening file '/etc/keepalived/keepalived.conf'.
Apr 1 18:09:35 localhost Keepalived_vrrp: Configuration is using : 70569 Bytes
Apr 1 18:09:35 localhost Keepalived_vrrp: Using LinkWatch kernel netlink reflector...
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Using LinkWatch kernel netlink reflector...
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Activating healtchecker for service [113.74.32.24]:80
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Activating healtchecker for service [113.74.32.25]:80
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Activating healtchecker for service [112.97.66.24]:80
Apr 1 18:09:35 localhost Keepalived_healthcheckers: Activating healtchecker for service [112.97.66.25]:80
Apr 1 18:09:35 localhost Keepalived_vrrp: VRRP sockpool: [ifindex(2), proto(112), fd(10,11)]
Apr 1 18:09:35 localhost Keepalived_vrrp: VRRP sockpool: [ifindex(3), proto(112), fd(12,13)]
Apr 1 18:09:36 localhost Keepalived_vrrp: VRRP_Instance(UNICOM) Transition to MASTER STATE
Apr 1 18:09:36 localhost Keepalived_vrrp: VRRP_Instance(TELNET) Transition to MASTER STATE
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(UNICOM) Entering MASTER STATE
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(UNICOM) setting protocol VIPs.
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(UNICOM) Sending gratuitous ARPs on eth1 for 112.97.66.28
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Group(UNI) Syncing instances to MASTER state
Apr 1 18:09:37 localhost Keepalived_healthcheckers: Netlink reflector reports IP 112.97.66.28 added
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(TELNET) Entering MASTER STATE
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(TELNET) setting protocol VIPs.
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Instance(TELNET) Sending gratuitous ARPs on eth0 for 113.74.32.28
Apr 1 18:09:37 localhost Keepalived_vrrp: VRRP_Group(TEL) Syncing instances to MASTER state
Apr 1 18:09:37 localhost Keepalived_healthcheckers: Netlink reflector reports IP 113.74.32.28 added
Apr 1 18:09:42 localhost Keepalived_vrrp: VRRP_Instance(UNICOM) Sending gratuitous ARPs on eth1 for 112.97.66.28
Apr 1 18:09:42 localhost Keepalived_vrrp: VRRP_Instance(TELNET) Sending gratuitous ARPs on eth0 for 113.74.32.28

ipvsadm的显示结果：
# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 113.74.32.28:http wrr persistent 50
-> 113.74.32.24:http Route 1 37 106
-> 113.74.32.25:http Route 1 12 83
TCP 112.97.66.28:http wrr persistent 50
-> 112.97.66.24:http Route 1 0 0
-> 112.97.66.25:http Route 1 0 0

备注：联通IP在机房内部是能正常访问的。求解……