Hints
Hint 1Show
If the 2 bytes after the source MAC are 0x8100, the next 4 bytes are an 802.1Q tag, followed by the real EtherType (0x0800)
Hint 2Show
The VLAN ID is the low 12 bits of the TCI (the last 2 bytes of the tag). Comparing the whole TCI with 42 or filtering by priority finds nothing
Hint 3Show
The source IP, MAC, port and fragment format do not reveal the VLAN. Fragments carry no numbers; their order in the pcap is the order to join them