$ ./vlan.pl
This is element : 0
This is element : 1
This is element : 2
This is element : 3
found a vlan line
found an ifconfig line
This is element : 4
found a vlan line
found an ifconfig line

##</code><code>##

 } elsif (/^ifconfig/) {
            $ifconfig++ #for m/\S+/g;
        }

##</code><code>##

hostname host97
vlan 72
ifconfig 504
WRONG!!!

##</code><code>##

hostname host97
vlan 72
ifconfig 72