❯ sudo tcpdump -i any udp
tcpdump: WARNING: any: That device doesn't support promiscuous mode
(Promiscuous mode not supported on the "any" device)
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes
20:37:06.187765 enp37s0 M   IP6 fe80::90a6:7948:e5a5:6dc1.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:06.243941 enp37s0 Out IP firdesk.lan.44704 > firpi.lan.domain: 16559+ PTR? 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa. (90)
20:37:06.267119 enp37s0 In  IP firpi.lan.domain > firdesk.lan.44704: 16559 NXDomain 0/1/0 (154)
20:37:06.268514 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (511)
20:37:06.269051 enp37s0 Out IP6 firdesk9.mdns > ff02::fb.mdns: 0 [4a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (313)
20:37:06.324072 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:07.478327 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (511)
20:37:07.478943 enp37s0 Out IP6 firdesk9.mdns > ff02::fb.mdns: 0 [4a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (313)
20:37:09.728363 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (511)
20:37:09.728922 enp37s0 Out IP6 firdesk9.mdns > ff02::fb.mdns: 0 [4a] PTR (QM)? 1.c.d.6.5.a.5.e.8.4.9.7.6.a.0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (313)
20:37:10.718682 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:12.997740 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:13.978281 enp37s0 Out IP firdesk.lan.41564 > firpi.lan.domain: 23166+ PTR? 1.1.168.192.in-addr.arpa. (42)
20:37:13.978476 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 1.1.168.192.in-addr.arpa. (463)
20:37:13.979592 enp37s0 In  IP firpi.lan.domain > firdesk.lan.41564: 23166* 1/0/0 PTR firpi.lan. (65)
20:37:13.979939 enp37s0 Out IP firdesk.lan.56893 > firpi.lan.domain: 49365+ PTR? 236.1.168.192.in-addr.arpa. (44)
20:37:13.980913 enp37s0 In  IP firpi.lan.domain > firdesk.lan.56893: 49365* 1/0/0 PTR firdesk.lan. (69)
20:37:13.981357 enp37s0 Out IP firdesk.lan.51885 > firpi.lan.domain: 65151+ PTR? 251.0.0.224.in-addr.arpa. (42)
20:37:13.999685 enp37s0 In  IP firpi.lan.domain > firdesk.lan.51885: 65151 1/0/0 PTR mdns.mcast.net. (70)
20:37:14.000453 enp37s0 Out IP firdesk.lan.38289 > firpi.lan.domain: 11993+ PTR? b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa. (90)
20:37:14.014920 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:14.017772 enp37s0 In  IP firpi.lan.domain > firdesk.lan.38289: 11993 NXDomain 0/1/0 (154)
20:37:14.019237 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 3.9.8.4.3.c.5.4.2.1.3.9.4.6.9.2.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (511)
20:37:14.020208 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 6.e.a.6.7.c.e.f.f.f.f.4.b.0.e.3.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (511)
20:37:14.020730 enp37s0 Out IP6 firdesk9.mdns > ff02::fb.mdns: 0 [4a] PTR (QM)? 6.e.a.6.7.c.e.f.f.f.f.4.b.0.e.3.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (313)
20:37:15.228573 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] [3q] PTR (QM)? 6.e.a.6.7.c.e.f.f.f.f.4.b.0.e.3.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. PTR (QM)? 3.9.8.4.3.c.5.4.2.1.3.9.4.6.9.2.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. PTR (QM)? 1.1.168.192.in-addr.arpa. (575)
20:37:15.229104 enp37s0 Out IP6 firdesk9.mdns > ff02::fb.mdns: 0 [4a] PTR (QM)? 6.e.a.6.7.c.e.f.f.f.f.4.b.0.e.3.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (313)
20:37:16.180076 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:23.045944 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:24.122948 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:26.279217 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req
20:37:27.018266 enp37s0 B   IP firlag-server.lan.netbios-dgm > 192.168.1.255.netbios-dgm: UDP, length 237
20:37:27.018322 enp37s0 B   IP firlag-server.lan.netbios-dgm > 192.168.1.255.netbios-dgm: UDP, length 214
20:37:27.043115 enp37s0 Out IP firdesk.lan.45425 > firpi.lan.domain: 24412+ PTR? 16.1.168.192.in-addr.arpa. (43)
20:37:27.043339 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 16.1.168.192.in-addr.arpa. (464)
20:37:27.045618 enp37s0 In  IP firpi.lan.domain > firdesk.lan.45425: 24412* 1/0/0 PTR firlag-server.lan. (74)
20:37:28.227921 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 16.1.168.192.in-addr.arpa. (464)
20:37:30.477856 enp37s0 Out IP firdesk.lan.mdns > mdns.mcast.net.mdns: 0 [8a] PTR (QM)? 16.1.168.192.in-addr.arpa. (464)
20:37:30.918418 enp37s0 M   IP6 fe80::3e0b:4fff:fec7:6ae6.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 inf-req