初学者关于ipmp疑惑，请大侠指点一二

我是在虚拟机中Solaris配置的ipmp，下面是我的配置文件信息：我配的是227是浮动ip，可当我手动把e1000g0 down掉后，227还是在e1000g0上，再把e1000g1 down掉，227还能通，这正常么？2个网卡都down掉了，浮动ip怎么通的？
# uname -a
SunOS host 5.10 Generic_137138-09 i86pc i386 i86pc
#
#
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
e1000g0: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 2
        inet 192.168.205.224 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:d5
e1000g0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.205.227 netmask ffffff00 broadcast 192.168.205.255
e1000g1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3
        inet 192.168.205.225 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:df
#
#
# cd etc
# more hosts
#
# Internet host table
#
::1     localhost      
127.0.0.1       localhost      
192.168.205.224 host-1  loghost
192.168.205.225 host-2
192.168.205.227  host
#
# more hostname.e1000g0
host-1 netmask + broadcast + group ipmp deprecated -failover up addif host netmask + broadcast + group ipmp failover up
# more hostname.e1000g1
host-2 netmask + broadcast + group ipmp deprecated -failover stand up
#
# ifconfig e1000g0 down
# ping 192.168.205.224
^C#
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
e1000g0: flags=9040842<BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 2
        inet 192.168.205.224 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:d5
e1000g0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.205.227 netmask ffffff00 broadcast 192.168.205.255
e1000g1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3
        inet 192.168.205.225 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:df
#
# ifconfig e1000g1 down
# ping 192.168.205.225
^C#
# ping 192.168.205.227
192.168.205.227 is alive
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
e1000g0: flags=9040842<BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 2
        inet 192.168.205.224 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:d5
e1000g0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.205.227 netmask ffffff00 broadcast 192.168.205.255
e1000g1: flags=9040842<BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3
        inet 192.168.205.225 netmask ffffff00 broadcast 192.168.205.255
        groupname ipmp
        ether 0:c:29:8a:29:df
#

有网关么？

自己ping自己死活都是通的吧，你拔插网线还通的话才不正常