[SOLVED] How to force multicast packet to go via different interface?

Hi folks,

I am working on a Solaris-10 global server, which is hosting 7 non-global zones. There are two kind of network interfaces on our servers, admin and prod. There is one route/multicast, which is going via admin interface, I want to delete that and have that from prod interface.
e1000g0 is admin interface
e1000g3 is prod interface

# ifconfig e1000g0
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.244.20 netmask ffffff80 broadcast 192.168.244.127
        ether 0:14:4f:78:f8:84
# ifconfig e1000g3
e1000g3: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
        inet 216.221.133.250 netmask ffffffc0 broadcast 216.221.133.255
        ether 0:14:4f:78:f8:87
#

If I check route of all zones, I see that multicast packets are going via e1000g0 (except the first one). I want it to go with prod interface e1000g3. I am not getting idea, how to do this. here is netstat from all zones, whoch shows that multicast packets are going via e1000g0, which I don't want.

# for i in `cat /var/tmp/all_zones.out`; do zlogin $i netstat -nrv | grep 224.0.0.0; done
224.0.0.0            240.0.0.0       192.168.241.21       e1000g1:1  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.24       e1000g0:5  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.22       e1000g0:4  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.23       e1000g0:2  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.25       e1000g0:3  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.32       e1000g0:6  1500*    0   1 U        0      0
224.0.0.0            240.0.0.0       192.168.244.33       e1000g0:7  1500*    0   1 U        0      0
#

Please suggest, how should I delete it and add new route, which can send multicast packets via e1000g3.
Network team already enabled multicast for that prod VLAN

Thanks

I found the issue, it was tricky.

Multicast packets are going through admin interface because it is managed by /lib/svc/method/net-svc configuration. One of its parameter says

if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 
        mcastif=`/sbin/dhcpinfo Yiaddr` || mcastif=$_INIT_UTS_NODENAME 
else 
        mcastif=$_INIT_UTS_NODENAME 
fi

It says multicast should go via NODENAME. That means, whatever is hostname and uname -n returns. By default hostname is set to admin interface. Two changes I made :

-Changed hostname and zonename in /etc/hosts, so at zonemanager level, it look to pubic IP
-In zonecfg, I moved up the public interface, so it goes FIRST in zone description file.

Thanks for the feedback!