alias iban {
  .set %ibanon on
  set %iban $1
  set %ichan $chan
  who $chan
}
raw 352:*: {
  if (%ibanon == on) {
    if ($3 == %iban) {
      ban -k %ichan $6 Badident.
      unset -u8 %ibanon 
    }
  }
}