user@machine:~# sudo tcpdump -n -i any udp port 25586
tcpdump: data link type LINUX_SLL2
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
0 packets captured
29 packets received by filter
0 packets dropped by kernel
user@machine:~# sudo tcpdump -n -i any udp port 25586
tcpdump: data link type LINUX_SLL2
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
0 packets captured
29 packets received by filter
0 packets dropped by kernel