split method

[Rico29]

hello
I'm unable to make the "split" method work :

use IPv6::Address;
use Data::Dumper;
my $ipv6_DP = IPv6::Address->new('2a06:1:4::/48')
print Dumper($ipv6_DP->split(3));

Always return "substr outside of string at /usr/share/perl5/IPv6/Address.pm line 351."

Tried with $ipv6_DP->split(3,64)
Tried with $ipv6_DP->addr_string; before split

Any idea what I'm doing wrong ?
Regards

[Rico29]

Perl version :
This is perl 5, version 20, subversion 2 (v5.20.2) built for x86_64-linux-gnu-thread-multi

[PaulGWebster]

I also get the same:
root@gateway:~ # perl -e 'use IPv6::Address; my $ipv6 = IPv6::Address->new("2001:648:2000::/48"); print @{$ipv6->split(4)}' substr outside of string at /usr/local/lib/perl5/site_perl/IPv6/Address.pm line 355.

This is perl 5, version 32, subversion 1 (v5.32.1) built for amd64-freebsd-thread-multi