Ipv6MulticastScope
Ipv6MulticastScope =
"reserved"|"interface-local"|"link-local"|"realm-local"|"admin-local"|"site-local"|"organization-local"|"global"|"unassigned"
Defined in: packages/net-address/src/ipv6/classify-ipv6.ts:166
How far a multicast address is allowed to travel, RFC 4291 §2.7.