tcpdump not port 80

commandline session

root@debian:~# tcpdump -i wlan0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), capture size 100535 bytes
23:33:46.824172 IP debian.local.48247 > mars.infoclub.in.http: Flags [S], seq 1276297543, win 14600, options [mss 1460,sackOK,TS val 4098743 ecr 0,nop,wscale 5], length 0
23:33:46.826612 IP debian.local.41745 > 192.168.0.1.domain: 43954+ PTR? 18.210.22.46.in-addr.arpa. (43)
23:33:46.827744 IP 192.168.0.1.domain > debian.local.41745: 43954 1/0/0 PTR mars.infoclub.in. (73)
23:33:46.828480 IP debian.local.35494 > 192.168.0.1.domain: 55325+ PTR? 101.0.168.192.in-addr.arpa. (44)
23:33:46.873207 IP 192.168.0.1.domain > debian.local.35494: 55325 NXDomain 0/0/0 (44)
23:33:46.975881 IP6 fe80::217:3fff:fed4:5a91.mdns > ff02::fb.mdns: 0 PTR (QM)? 101.0.168.192.in-addr.arpa. (44)
^C23:33:46.976095 IP debian.local.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 101.0.168.192.in-addr.arpa. (44)

7 packets captured
54 packets received by filter
17 packets dropped by kernel
root@debian:~# tcpdump -i wlan0 not port 80
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), capture size 100535 bytes
23:34:05.296866 IP6 fe80::5ed9:98ff:fe5c:11a > ip6-allnodes: ICMP6, router advertisement, length 64
23:34:05.298404 IP debian.local.57548 > 192.168.0.1.domain: 1135+ PTR? a.1.1.0.c.5.e.f.f.f.8.9.9.d.e.5.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (90)
23:34:05.301770 IP 192.168.0.1.domain > debian.local.57548: 1135 NXDomain 0/0/0 (90)
23:34:05.304101 IP debian.local.39053 > 192.168.0.1.domain: 17175+ PTR? 1.0.168.192.in-addr.arpa. (42)
23:34:05.543073 ARP, Request who-has debian.local tell 192.168.0.1, length 28
23:34:05.543107 ARP, Reply debian.local is-at 00:17:3f:d4:5a:91 (oui Unknown), length 28
^C23:34:08.676445 IP 192.168.0.1.2048 > 239.255.255.250.1900: UDP, length 280

7 packets captured
30 packets received by filter
0 packets dropped by kernel
root@debian:~#

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