#!/sbin/sh
#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident	"@(#)net-loopback	1.7	08/04/25 SMI"

. /lib/svc/share/smf_include.sh

#
# In a shared-IP zone we need this service to be up, but all of the work
# it tries to do is irrelevant (and will actually lead to the service
# failing if we try to do it), so just bail out.
# In the global zone and exclusive-IP zones we proceed.
#
smf_configure_ip || exit 0

#
# Cause ifconfig to not automatically start in.mpathd when IPMP groups are
# configured.  This is not strictly necessary but makes it so that in.mpathd
# will always be started explicitly from /lib/svc/method/net-init (the 
# svc:/network/initial service), when we're sure that /usr is mounted.
#
SUNW_NO_MPATHD=; export SUNW_NO_MPATHD

#
# Before any interfaces are configured, we need to set the system
# default IP forwarding behavior.  This will be the setting for
# interfaces that don't modify the per-interface setting with the
# router or -router ifconfig command in their /etc/hostname.<intf>
# files.  Due to their dependency on this service, the IP forwarding services
# will run at this point (though routing daemons will not run until later
# in the boot process) and set forwarding flags.
#

# IPv4 loopback
/sbin/ifconfig lo0 plumb 127.0.0.1 up
# Trusted Extensions shares the loopback interface with all zones
if (smf_is_system_labeled); then
	if [ `/sbin/zonename` = "global" ]; then
                 /sbin/ifconfig lo0 all-zones
        fi
fi

# Configure the v6 loopback if any IPv6 interfaces are configured.
interface_names="`echo /etc/hostname6.*[0-9] 2>/dev/null`"
if [ "$interface_names" != "/etc/hostname6.*[0-9]" ]; then
        ORIGIFS="$IFS"
        IFS="$IFS."
        set -- $interface_names
        IFS="$ORIGIFS"
        while [ $# -ge 2 ]; do
                shift
                if [ $# -gt 1 -a "$2" != "/etc/hostname6" ]; then
                        while [ $# -gt 1 -a "$1" != "/etc/hostname6" ]; do
                                shift
                        done
                else
                        inet6_list="$inet6_list $1"
                        shift
                fi
        done
fi

if [ -n "$inet6_list" ]; then
	/sbin/ifconfig lo0 inet6 plumb ::1 up
	if (smf_is_system_labeled); then
		if [ `/sbin/zonename` = "global" ]; then
		    /sbin/ifconfig lo0 inet6 all-zones
		fi
	fi
else
	exit 0
fi
