RegEx is not matching

Hi there,

Can someone please help me on regex pattern matching with my below function?

This is matching IPv4 addresses but somehow my IPv6 addresses are not getting matched

Code:212.129.46.32
213.163.64.208
217.61.0.97
223.5.5.5
223.6.6.6
2001:1398:1:0:200:1:123:46
2001:19f0:5:6012:5400:2ff:fe60:7579
2001:19f0:5801:b7c::1
2001:19f0:6401:b3d:5400:2ff:fe5a:fb9fCode:function convert {
while read ip; do
if ! [[ "$ip" =~ [^0-9.-] ]];
then
todo[$y]+=" $ip $ip"
if [ $z -eq 2000 ]
then
z=0
let y=$y+1
else
let z=$z+1
fi
fi
done

dynamic_objects -do ti_$type
dynamic_objects -n ti_$type

for i in "${todo[@]}" ;
do
dynamic_objects -o ti_$type -r $i -a
done
}