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Operating Systems Solaris How to force multicast packet to go via different interface? Post 303044535 by solaris_1977 on Tuesday 25th of February 2020 01:15:10 PM
Old 02-25-2020
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
Code:
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.
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NEWLIST(8)						      System Manager's Manual							NEWLIST(8)

NAME
newlist - Create a new, unpopulated Mailman mailing list. SYNOPSIS
newlist [options] [listname] [listadmin-addr] [admin-password] OPTIONS
-l language, --language=language Make the list's preferred language `language', which must be the (mostly two letter) language code as found under /usr/share/mail- man. -u urlhost, --urlhost=urlhost Gives the list's web interface host name. -e emailhost, --emailhost=emailhost Gives the list's email domain name. -q, --quiet Normally the administrator is notified by email (after a prompt) that their list has been created. This option suppresses that notification and the prompting. -h, --help Print a small help text and exit SECURITY
Including the admin-password on the command line is a small security risk if you have untrusted users on the system. NOTES
You can specify as many of the arguments as you want on the command line: you will be prompted for the missing ones. Every Mailman list has two parameters which define the default host name for outgoing email, and the default URL for all web interfaces. When you configured Mailman, certain defaults were calculated, but if you are running multiple virtual Mailman sites, then the defaults may not be appropriate for the list you are creating. You also specify the domain to create your new list in by typing the command like so: newlist --urlhost=www.example.com mylist where `www.example.com' should be the base hostname for the URL to this virtual hosts's lists. E.g. with this setting people will view the general list overviews at http://www.example.com/mailman/listinfo. Also, www.example.com should be a key in the VIRTUAL_HOSTS mapping in mm_cfg.py/Defaults.py if the email hostname to be automatically determined. If you want the email hostname to be different from the one looked up by the VIRTUAL_HOSTS or if urlhost is not registered in VIR- TUAL_HOSTS, you can specify `emailhost' like so: newlist --urlhost=www.example.com --emailhost=example.com mylist where `example.com' is the mail domain name. If you don't specify emailhost but urlhost is not in the virtual host list, then mm_cfg.DEFAULT_EMAIL_HOST will be used for the email interface. For backward compatibility, you can also specify the domain to create your new list in by spelling the listname like so: mylist@www.example.com where www.example.com is used for `urlhost' but it will also be used for `emailhost' if it is not found in the virtual host table. Note `--urlhost' and `--emailhost' have precedence to this notation. If you spell the list name as just `mylist', then the email hostname will be taken from DEFAULT_EMAIL_HOST and the url will be taken from DEFAULT_URL (as defined in your Defaults.py file or overridden by settings in mm_cfg.py). Note that listnames are forced to lowercase. The list admin address need to be a fully-qualified address, like owner@example.com, not just owner. AUTHOR
Author of Mailman is the Mailman Cabal, see http://www.list.org/ for information. This manpage is written by Tollef Fog Heen <tfheen@debian.org> for Debian, but may be used by others. SEE ALSO
Mailman documentation on http://www.list.org/ and in /usr/share/doc/mailman. 2008-06-14 NEWLIST(8)
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