Constant DEFAULT_PKARR_TTL 

pub const DEFAULT_PKARR_TTL: u32 = 30; // 30u32

Default TTL for the records in the pkarr signed packet.

The Time To Live (TTL) tells DNS caches how long to store a record. It is ignored by the iroh-dns-server, e.g. as running on N0_DNS_PKARR_RELAY_PROD, as the home server keeps the records for the domain. When using the pkarr relay no DNS is involved and the setting is ignored.