Use of uninitialized value $i in bitwise and (&) at /usr/local/share/perl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 1.
IP address: 192.168.1.1
 is not inside 192.168.1.0/27
Use of uninitialized value $i in bitwise and (&) at /usr/local/share/perl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 2.
IP address: 192.168.1.2
 is not inside 192.168.1.0/27
Use of uninitialized value $i in bitwise and (&) at /usr/local/share/perl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 3.
IP address: 192.168.1.3
 is not inside 192.168.1.0/27
IP address: 192.168.1.4 is inside 192.168.1.0/27