I/

1)

cat /etc/resolv.conf => 172.16.1.158

2)

dig -x 172.16.1.158 => eru.arda.lan.

II/

1)

tshark -i eno1 -V -f "host 172.16.3.224 and not arp" |tee capture.txt

2)

dig iluvatar.arda.lan

3)

;; ANSWER SECTION:
iluvatar.arda.lan.	3600	IN	A	172.16.1.30

adresse ipv4

4)

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11018

5)

; <<>> DiG 9.18.16 <<>> iluvatar.arda.lan.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5457
;; flags: qr (aa) rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
               |
               V
              Ici

6)

le temps de vie est de : 

7)



8)



III/

1)



2)



3)