heartbeat 2.0.8 中配置虚拟MAC未成功

求救：HA中怎么配置虚拟MAC
网络环境：服务器双网卡已做BOND
软件环境：heartbeat2.0.8
问题：装有HA的机器有A和B两台。通过heartbeat上配置虚拟IP地址（172.25.16.174 ），虚拟MAC地址（00:18:8b:82:8c:2b）当网络中其他计算机访问172.25.16.174时，正常情况下，其对应的MAC地址应该是（00:18:8b:82:8c:2b）。。但在实验中其对应的MAC地址是A或B中的某一个。。。
cib.xml文件如下：
<1nvpair id="597bd724-7f22-42ce-9aa2-3ed202221cc2" name="ip" value="172.25.16.174">
<1nvpair id="a2211cba-00bd-4fed-93c2-73a3517fc5d0" name="arp_mac" value="00:18:8b:82:8c:2b"/>
<1nvpair id="da01bd5b-e062-4d94-91a4-e53b2506f48c" name="mac" value="00:18:8b:82:8c:2b"/>
<1nvpair id="61551b14-5436-4bc1-bd99-ec43a21435ed" name="clusterip_hash" value="sourceip-sourceport-destport"/>

log文件如下：

IPaddr2[3849][3886]: 2008/02/27_23:15:11 INFO: /bin/ip -f inet addr add 172.25.16.174/24 brd 172.25.16.255 dev bond0
IPaddr2[3849][3888]: 2008/02/27_23:15:11 INFO: /bin/ip link set bond0 up
IPaddr2[3849][3890]: 2008/02/27_23:15:11 INFO: /usr/lib64/heartbeat/send_arp -i 200 -r 5 -p /var/run/heartbeat/rsctmp/send_arp/send_arp-172.25.16.174 bond0 172.25.16.174 auto 172.25.16.174 00:18:8b:82:8c:2b
crmd[3714]: 2008/02/27_23:15:11 info: process_lrm_event: LRM operation resource_ip_start_0 (call=5, rc=0) complete
crmd[3714]: 2008/02/27_23:15:11 info: append_restart_list: Resource resource_ip does not support reloads
lrmd[3711]: 2008/02/27_23:15:11 info: RA output: (resource_mysql:0:start:stdout) Starting service MySQL
lrmd[3711]: 2008/02/27_23:15:11 info: RA output: (resource_mysql:0:start:stdout) ..done

crmd[3714]: 2008/02/27_23:15:11 info: process_lrm_event: LRM operation resource_mysql:0_start_0 (call=6, rc=0) complete
crmd[3714]: 2008/02/27_23:15:11 info: append_restart_list: Resource resource_mysql:0 does not support reloads
cib[3710]: 2008/02/27_23:15:11 info: cib_diff_notify: Update (client: 3718, call:32): 0.703.6071 -> 0.703.6072 (ok)
cib[3962]: 2008/02/27_23:15:11 info: write_cib_contents: Wrote version 0.703.6072 of the CIB to disk (digest: b48ea3057e24be5d3277b3984cd4b325)
cib[3710]: 2008/02/27_23:15:12 info: cib_diff_notify: Update (client: 3714, call:20): 0.703.6072 -> 0.703.6073 (ok)
cib[3710]: 2008/02/27_23:15:12 info: cib_diff_notify: Update (client: 3714, call:22): 0.703.6073 -> 0.703.6074 (ok)
cib[3710]: 2008/02/27_23:15:12 info: cib_diff_notify: Update (client: 3714, call:23): 0.703.6074 -> 0.703.6075 (ok)
cib[3966]: 2008/02/27_23:15:12 info: write_cib_contents: Wrote version 0.703.6075 of the CIB to disk (digest: 7ba5ecfd6a5feccffea109d548cd5edc)
cib[3710]: 2008/02/27_23:15:12 info: cib_diff_notify: Update (client: 3714, call:24): 0.703.6075 -> 0.703.6076 (ok)
cib[3968]: 2008/02/27_23:15:12 info: write_cib_contents: Wrote version 0.703.6076 of the CIB to disk (digest: 89abde0cc29b3e8068cf3e13e0b33b15)
crmd[3714]: 2008/02/27_23:15:16 info: do_lrm_rsc_op: Performing op=resource_mysql:0_monitor_5000 key=13:2:7635f735-fdc3-415b-8932-3c9814a5e7f5)