Problems

Once we first see a 0 we jump back to the first jump and process answer header.

We can get multiple questions back on the dns response even when we asked one. We should assume the packet conforms to the internet dns response protocol. However we can get truncation and jump out of bound or infinitely.

Start by tracing the DNS response parser around the answer header and name-jump handling described in the issue. Reproduce responses with multiple questions and truncated data, then verify that parsing stays within the packet and cannot loop indefinitely. Done means valid responses are handled without out-of-bounds jumps or infinite processing.

Written by the indexing model from the issue text.