[01:24 am] [ Dragon ] [~] $  sudo tcpdump -eni wlan0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), capture size 96 bytes
01:25:08.503870 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:09.513859 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:10.510532 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:11.510533 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:12.517199 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:13.517199 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:14.517201 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:15.523865 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10
01:25:16.523866 00:13:46:ea:38:76 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: arp who-has 192.168.1.20 tell 192.168.1.10

9 packets captured
9 packets received by filter
0 packets dropped by kernel




[root@cave dragon]# arp -an
? (192.168.1.20) at 00:11:09:21:DF:74 [ether] on wlan0
? (201.208.0.1) at 00:90:1A:A0:20:20 [ether] on eth0
[root@cave dragon]# ping 192.168.1.20
PING 192.168.1.20 (192.168.1.20) 56(84) bytes of data.
From 192.168.1.10 icmp_seq=1 Destination Host Unreachable
From 192.168.1.10 icmp_seq=2 Destination Host Unreachable
From 192.168.1.10 icmp_seq=3 Destination Host Unreachable
From 192.168.1.10 icmp_seq=4 Destination Host Unreachable
From 192.168.1.10 icmp_seq=5 Destination Host Unreachable
From 192.168.1.10 icmp_seq=6 Destination Host Unreachable
From 192.168.1.10 icmp_seq=7 Destination Host Unreachable
From 192.168.1.10 icmp_seq=8 Destination Host Unreachable
From 192.168.1.10 icmp_seq=9 Destination Host Unreachable
From 192.168.1.10 icmp_seq=10 Destination Host Unreachable
From 192.168.1.10 icmp_seq=11 Destination Host Unreachable
From 192.168.1.10 icmp_seq=12 Destination Host Unreachable

--- 192.168.1.20 ping statistics ---
15 packets transmitted, 0 received, +12 errors, 100% packet loss, time 14035ms
, pipe 3