Software: Apache/2.4.18 (Ubuntu). PHP/7.0.33-0ubuntu0.16.04.16 

uname -a: Linux digifus 3.13.0-57-generic #95-Ubuntu SMP Fri Jun 19 09:28:15 UTC 2015 x86_64 

uid=33(www-data) gid=33(www-data) groups=33(www-data) 

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/lib/ifupdown/   drwxr-xr-x
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Viewing file:     wait-for-ll6.sh (336 B)      -rwxr-xr-x

#!/bin/sh

attempts=${IF_LL_ATTEMPTS:-60}
delay=${IF_LL_INTERVAL:-0.1}

for attempt in $(seq 1 $attempts); do
	lladdress=$(ip -6 -o a s dev "$IFACE" scope link -tentative)
	if [ -n "$lladdress" ]; then
		attempt=0
		break
	fi
	sleep $delay
done

if [ $attempt -eq $attempts ]; then
	echo "Could not get a link-local address"
	exit 1
fi