foreach my $oid (sort keys(%iface)) {
  %oids = ("$iface{$oid}" => `$snmpwalk $ip $community $oid`);
  %oid2 = ("$iface{$oid}" => `$snmpwalk $ip $community $oid`);
  %oid3 = ("$iface{$oid}" => `$snmpwalk $ip $community $oid`);
}