There is no data in response.
packet_ttl() checks for !is_negative?
Domain Name System (response)
Transaction ID: 0x9eaf
Flags: 0x8500 Standard query response, No error
1... .... .... .... = Response: Message is a response
.000 0... .... .... = Opcode: Standard query (0)
.... .1.. .... .... = Authoritative: Server is an authority for domain
.... ..0. .... .... = Truncated: Message is not truncated
.... ...1 .... .... = Recursion desired: Do query recursively
.... .... 0... .... = Recursion available: Server can't do recursive queries
.... .... .0.. .... = Z: reserved (0)
.... .... ..0. .... = Answer authenticated: Answer/authority portion was not
authenticated by the server
.... .... ...0 .... = Non-authenticated data: Unacceptable
.... .... .... 0000 = Reply code: No error (0)
Questions: 1
Answer RRs: 0
Authority RRs: 0
Additional RRs: 0
Queries
mr-z01.tm-azurefd.net: type A, class IN
Name:
mr-z01.tm-azurefd.net
[Name Length: 21]
[Label Count: 3]
Type: A (1) (Host Address)
Class: IN (0x0001)
[Request In: 661]
[Time: 1.739000 milliseconds]