nebula.txt

$ sudo dhcpdump -i wlan0
...
  TIME: 2017-12-21 10:43:43.110
    IP: 192.168.10.1 (9c:ad:ef:31:c2:3e) > 192.168.10.148 (d8:fc:93:14:df:3e)
    OP: 2 (BOOTPREPLY)
 HTYPE: 1 (Ethernet)
  HLEN: 6
  HOPS: 0
   XID: b7f2490e
  SECS: 0
 FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 192.168.10.148
SIADDR: 192.168.10.1
GIADDR: 0.0.0.0
CHADDR: d8:fc:93:14:df:3e:00:00:00:00:00:00:00:00:00:00
 SNAME: 192.168.10.1.
 FNAME: .
OPTION:  53 (  1) DHCP message type         2 (DHCPOFFER)
OPTION:  54 (  4) Server identifier         192.168.10.1
OPTION:  51 (  4) IP address leasetime      86400 (24h)
OPTION:  58 (  4) T1                        43200 (12h)
OPTION:  59 (  4) T2                        75600 (21h)
OPTION:  28 (  4) Broadcast address         192.168.10.255
OPTION:   6 (  4) DNS server                192.168.10.1
OPTION:   3 (  4) Routers                   192.168.10.1
OPTION:   1 (  4) Subnet mask               255.255.255.0



  TIME: 2017-12-21 10:43:43.111
    IP: 192.168.10.1 (9c:ad:ef:31:c2:3e) > 192.168.10.148 (d8:fc:93:14:df:3e)
    OP: 2 (BOOTPREPLY)
 HTYPE: 1 (Ethernet)
  HLEN: 6
  HOPS: 0
   XID: b7f2490e
  SECS: 0
 FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 192.168.10.148
SIADDR: 192.168.10.1
GIADDR: 0.0.0.0
CHADDR: d8:fc:93:14:df:3e:00:00:00:00:00:00:00:00:00:00
 SNAME: 192.168.10.1.
 FNAME: .
OPTION:  53 (  1) DHCP message type         5 (DHCPACK)
OPTION:  54 (  4) Server identifier         192.168.10.1
OPTION:  51 (  4) IP address leasetime      86400 (24h)
OPTION:  58 (  4) T1                        43200 (12h)
OPTION:  59 (  4) T2                        75600 (21h)
OPTION:  28 (  4) Broadcast address         192.168.10.255
OPTION:  12 (  8) Host name                 feather2
OPTION:   6 (  4) DNS server                192.168.10.1
OPTION:   3 (  4) Routers                   192.168.10.1
OPTION:   1 (  4) Subnet mask               255.255.255.0
...


$ host 192.168.10.1
1.10.168.192.in-addr.arpa domain name pointer obiconnect.com.


$  nmap -Pn 192.168.10.1
Starting Nmap 7.01 ( https://nmap.org ) at 2017-12-21 10:52 CST
Nmap scan report for obiconnect.com (192.168.10.1)
Host is up.
All 1000 scanned ports on obiconnect.com (192.168.10.1) are filtered



$ arp 192.168.10.1
Address                  HWtype  HWaddress           Flags Mask            Iface
gateway                  ether   9c:ad:ef:31:c2:3e   C                     wlan0



$ dig google.com 192.168.10.1

; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com 192.168.10.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 877
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.			IN	A

;; Query time: 1 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Thu Dec 21 10:39:54 CST 2017
;; MSG SIZE  rcvd: 28

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53228
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1280
;; QUESTION SECTION:
;192.168.10.1.			IN	A

;; ANSWER SECTION:
192.168.10.1.		0	IN	A	192.168.10.1

;; Query time: 0 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Thu Dec 21 10:39:54 CST 2017
;; MSG SIZE  rcvd: 57