Split the network and netmask into separate terms and sort on netmask within network.
knoppix@Microknoppix:~$ perl -MSocket -Mstrict -wE '
my @networks = qw{
10.182.8.0/26
10.182.8.0/21
10.182.8.64/26
10.182.8.128/26
10.182.8.192/26
};
say for
map { $_->[ 0 ] }
sort { $a->[ 1 ] cmp $b->[ 1 ] || $a->[ 2 ] <=> $b->[ 2 ] }
map { my( $network, $netmask ) = split m{/};
[ $_, inet_aton( $network ), $netmask ];
}
@networks;'
10.182.8.0/21
10.182.8.0/26
10.182.8.64/26
10.182.8.128/26
10.182.8.192/26
knoppix@Microknoppix:~$
I hope this is helpful.
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