ttl property
In case of IPv6 the TTL value is assumed as the hop limit. Note that for IPV6 and administratively scoped IPv4 multicast the primary use for hop limit / TTL is to prevent packets from (endlessly) circulating and not limiting scope. In these cases the address contains the scope.
Implementation
@JsonKey(name: 'TTL', fromJson: OnvifUtil.mappedToInt)
final int ttl;