Cross-posting from zones group as I've got no responses. As a lot of this 
content is crossbow/clearview related this might be of more interest to the 
folks here anyway..
Thanks in advance :)

Hello all,

I've configured a zone with 2 exclusive VNICs which are used in an 
active-active IPMP configuration on the zone. The zone boots OK and ifconfig 
and ipmpstat output all looks fine. Network connectivity is fine.
The problem comes when I have to reboot or shutdown the zone and it fails as it 
is unable to release the network interfaces.

ifconfig output is;
# ifconfig -a
lo0: flags=2001000849 mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
ipmp0: flags=8201000843 mtu 9000 index 2
inet 10.10.11.20 netmask ffffff00 broadcast 10.10.11.255
groupname ipmp0
vnic21: flags=209040843 mtu 9000 index 3
inet 10.10.11.21 netmask ffffff00 broadcast 10.10.11.255
groupname ipmp0
ether 2:8:20:9f:29:12
vnic22: flags=209040843 mtu 9000 index 4
inet 10.10.11.22 netmask ffffff00 broadcast 10.10.11.255
groupname ipmp0
ether 2:8:20:cc:ca:d6
lo0: flags=2002000849 mtu 8252 index 1
inet6 ::1/128

Config files;
# cat hostname.vnic21
vnic21 netmask + broadcast + group ipmp0 -failover up
# cat hostname.vnic22
vnic22 netmask + broadcast + group ipmp0 -failover up
# cat hostname.ipmp0
ipmp group ipmp0 zone20 netmask + broadcast + up

ipmpstat output;
# ipmpstat -a
ADDRESS STATE GROUP INBOUND OUTBOUND
10.10.11.20 up ipmp0 vnic21 vnic22 vnic21

But when I reboot I get;
# reboot
Feb 19 11:23:37 zone20 reboot: initiated by root on /dev/console
Feb 19 11:23:37 zone20 syslogd: going down on signal 15
[NOTICE: Zone rebooting]
[NOTICE: Zone boot failed]

In global zone messages;
Feb 19 11:23:44 deckard zoneadmd[2080]: [ID 702911 daemon.error] [zone 
'zone20'] unable to release network interface 'vnic22': Error 0
Feb 19 11:23:44 deckard zoneadmd[2080]: [ID 702911 daemon.error] [zone 
'zone20'] unable to release network interface 'vnic21': Error 0
Feb 19 11:23:44 deckard zoneadmd[2080]: [ID 702911 daemon.error] [zone 
'zone20'] unable to unconfigure network interfaces in zone
Feb 19 11:23:44 deckard zoneadmd[2080]: [ID 702911 daemon.error] [zone 
'zone20'] unable to destroy zone

OS is snv_107.

To me this doesn't look like BugID 6457375 - Unable to halt zone when interface 
plumbed with 0.0.0.0 (IPMP) - as the interfaces all have addresses on, but when 
I try to reboot the zone it gets stuck.

Is this a bug (new or existing) or am I doing something daft?

Cheers..
-- 
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