Function delete_dns_record 

pub async fn delete_dns_record(
    zone_name: &str,
    name: &str,
    record_type: RecordType,
    server: &str,
    key_data: &RndcKeyData,
) -> Result<()>

Delete a DNS record of any type using dynamic DNS update (RFC 2136).

This function sends an RFC 2136 DELETE operation to remove ALL records of the specified type for the given name.

Arguments

• zone_name - The DNS zone name (e.g., “example.com”)
• name - The record name (e.g., “www” for www.example.com, or “@” for apex)
• record_type - The DNS record type to delete (A, AAAA, TXT, MX, etc.)
• server - The DNS server address (IP:port, e.g., “10.0.0.1:53”)
• key_data - TSIG key for authentication

Returns

Returns Ok(()) if deletion succeeded (or if record didn’t exist).

Errors

Returns an error if the DNS server rejects the update or connection fails.