Allow being more specific in record deletions. #7
Description
Right now, DnsUpdater::delete does not allow deleting only a specific record type or content. My usecase is for a dynamic dns daemon. If the IPv4 address changes, I want to remove the previous A record and set a new one, but leave the IPv6 address unchanged, and the other way around if the IPv6 address changed instead. Right now, this is not supported afaict.