Software: Apache. PHP/8.1.30 

uname -a: Linux server1.tuhinhossain.com 5.15.0-163-generic #173-Ubuntu SMP Tue Oct 14 17:51:00 UTC
2025 x86_64 

uid=1002(picotech) gid=1003(picotech) groups=1003(picotech),0(root)  

Safe-mode: OFF (not secure)

/usr/lib/ifupdown/   drwxr-xr-x
Free 25.29 GB of 117.98 GB (21.44%)
                            Encoder    Tools    Proc.    FTP brute    Sec.    SQL    PHP-code    Update    Self remove    Logout    

Viewing file:     settle-dad.sh (667 B)      -rwxr-xr-x

#!/bin/sh

# 6 seconds maximum wait time
attempts=${IF_DAD_ATTEMPTS:-60}
delay=${IF_DAD_INTERVAL:-0.1}

[ $attempts -eq 0 ] && exit 0

echo -n "Waiting for DAD... "
for attempt in $(seq 1 $attempts); do
	tentative=$(ip -o -6 address list dev "$IFACE" to "${IF_ADDRESS}/${IF_NETMASK}" tentative | wc -l)
	if [ $tentative -eq 0 ]; then
		attempt=0 # This might have been our last attempt, but successful
		break
	fi
	sleep $delay
done

if [ $attempt -eq $attempts ]; then
	echo "Timed out"
	exit 1
fi

dadfailed=$(ip -o -6 address list dev "$IFACE" to "${IF_ADDRESS}/${IF_NETMASK}" dadfailed | wc -l)

if [ $dadfailed -ge 1 ]; then
	echo "Failed"
	exit 1
fi

echo Done