#!/bin/sh
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if [ ! -x /usr/sbin/zeroconf ]; then
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exit 0
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fi
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# IPv4 link-local addresses (zeroconf) are
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# only applicable on the 'inet' address family
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[ "X$ADDRFAM" != "Xinet" ] && exit 0
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# However there are some methods where it doesn't
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# make any sense to configure an IPv4LL address
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# not on loopback
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[ "X$METHOD" = "Xloopback" ] && exit 0
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# not on ppp or wvdial either
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[ "X$METHOD" = "Xppp" ] && exit 0
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[ "X$METHOD" = "Xwvdial" ] && exit 0
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# The administrator may have blacklisted interfaces
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# or only want zeroconf in a fallback situation
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[ -f /etc/default/zeroconf ] &&
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. /etc/default/zeroconf
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[ -n "$DISABLE" ] && exit 0
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for BLACK in $IFBLACKLIST; do
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case $IFACE in
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$BLACK)
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exit 0
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;;
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esac
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done
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# should we only allocate an address if we do not already have one?
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if [ -n "$FALLBACK" ]; then
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/sbin/ip addr show $IFACE scope global | grep -q "inet"
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IP=$?
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if [ $IP -eq 0 ]; then
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/sbin/ip route add 169.254.0.0/16 dev $IFACE
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exit 0
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fi
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fi
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# otherwise, run if we aren't already going
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if [ ! -r /var/run/zeroconf.$IFACE.pid ]; then
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/usr/sbin/zeroconf -i $IFACE
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fi
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exit 0
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