File content as of revision 37:793b39683406:

DNS -- host name and domain name if network is IPv4
client query O   unicast 53053 ->    53 QR=0
client reply I   unicast 53053 <-    53 QR=1

LLMNR -- just the host name
client query O multicast 53053 ->  5355 QR=0
client reply I   unicast 53053 <-  5355 QR=1
server query I multicast  5355 <- xxxxx QR=0
server reply O   unicast  5355 -> xxxxx QR=1

MDNS -- host name + '.local'
client query O multicast  5353 ->  5353 QR=0
client reply I multicast  5353 <-  5353 QR=1
server query I multicast  5353 <-  5353 QR=0
server reply O multicast  5353 ->  5353 QR=1

Dns directs packets to DnsReply(receive) and DnsServer(receive and send) and polls for DnsQuery(send) packets

DnsCache holds names against addresses and synchronises requests and replies.

DnsHdr and DnsName are helper modules.

LLMNR header
  Ident    -4692
  Non recursive query
  qd, an, ns, ar  1, 0, 0, 0
  Query PTR type record of 7.2.d.7.2.f.e.f.f.f.7.f.2.0.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa
  deal with question 0, answer 0, question 12, node 28
  replied with my name
LLMNR header
  Ident    -4692
  Authoritative reply
  qd, an, ns, ar  1, 1, 0, 0
  Query PTR type record of 7.2.d.7.2.f.e.f.f.f.7.f.2.0.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa
iEncodedName = 90
nameLength = 74
recordType = 12
ttl = 1024
len = 7
  Answer PTR type record of 7.2.d.7.2.f.e.f.f.f.7.f.2.0.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa2017-275 19:31:50 DnsNameDecode overran name buffer
 eating.local60-c83a400f913a
NT: urn:schemas-nds-com:service:SkyRemote:1
NTS: ssdp:alive
SERVER: Linux.3.10.27 UPnP/1.0 SKY DLNADOC/1.50
X-User-Agent. redsonic
USN: uuid:52554976-3247-4761-7465-0cf9c08ea5b2: