olemus
filtreeriv aadressimask marsruutimisprotokollides ja pääsuloendites
= a mask of bits for address filtering in routing protocols and access control lists

ülevaateid
https://www.techopedia.com/definition/16056/wildcard-mask
https://en.wikipedia.org/wiki/Wildcard_mask
https://www.cbtnuggets.com/blog/technology/networking/networking-basics-what-are-wildcard-masks-and-how-do-they-work
https://study-ccna.com/wildcard-masks/
http://www.rhyshaden.com/ipadd.htm

vt ka
- alamvõrgumask