Rating:

TLDR; The flag is in the IPv6 packets in the packet-capture. Reorder using the contents of `ipv6.flow` field.
https://meashiri.github.io/ctf-writeups/posts/202306-dantectf/#route-marks-the-spot

Original writeup (https://meashiri.github.io/ctf-writeups/posts/202306-dantectf/#route-marks-the-spot).