Netbook:~$ sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1
Netbook:~$ ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
inet 192.168.2.5/24 brd 192.168.2.255 scope global enp3s0
valid_lft forever preferred_lft forever
5: wlp1s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
6: wlxcXXXXXXXXXXX: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
inet 192.168.4.1/24 brd 192.168.4.255 scope global wlxcXXXXXXXXXXX
valid_lft forever preferred_lft forever
7: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 100
link/none
inet 192.168.5.1/24 brd 192.168.5.255 scope global tun0
valid_lft forever preferred_lft forever
8: enxXXXXXXXXXXX: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
inet 192.168.3.1/24 brd 192.168.3.255 scope global enxXXXXXXXXXXX
valid_lft forever preferred_lft forever
Netbook:~$ ip route show
default via 192.168.2.1 dev enp3s0 onlink
192.168.2.0/24 dev enp3s0 proto kernel scope link src 192.168.2.5
192.168.3.0/24 dev enxXXXXXXXXXXX proto kernel scope link src 192.168.3.1
192.168.4.0/24 dev wlxcXXXXXXXXXXX proto kernel scope link src 192.168.4.1
192.168.5.0/24 dev tun0 proto kernel scope link src 192.168.5.1
Netbook:~$ ping -c4 192.168.3.50
PING 192.168.3.50 (192.168.3.50) 56(84) bytes of data.
64 bytes from 192.168.3.50: icmp_seq=1 ttl=64 time=1.46 ms
64 bytes from 192.168.3.50: icmp_seq=2 ttl=64 time=1.84 ms
64 bytes from 192.168.3.50: icmp_seq=3 ttl=64 time=1.02 ms
64 bytes from 192.168.3.50: icmp_seq=4 ttl=64 time=1.70 ms
--- 192.168.3.50 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 6ms
rtt min/avg/max/mdev = 1.016/1.504/1.841/0.314 ms
Netbook:~$ ping -c4 192.168.4.2
PING 192.168.4.2 (192.168.4.2) 56(84) bytes of data.
--- 192.168.4.2 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 75ms
Клиент Wi-fi (192.168.4.2)
Обмен пакетами с 192.168.4.1 по с 32 байтами данных:
Ответ от 192.168.4.1: число байт=32 время=2мс TTL=64
Ответ от 192.168.4.1: число байт=32 время=2мс TTL=64
Ответ от 192.168.4.1: число байт=32 время=5мс TTL=64
Ответ от 192.168.4.1: число байт=32 время=5мс TTL=64
Статистика Ping для 192.168.4.1:
Пакетов: отправлено = 4, получено = 4, потеряно = 0
(0% потерь)
Приблизительное время приема-передачи в мс:
Минимальное = 2мсек, Максимальное = 5 мсек, Среднее = 3 мсек
C:\WINDOWS\system32>netstat -r
IPv4 таблица маршрута
===========================================================================
Активные маршруты:
Сетевой адрес Маска сети Адрес шлюза Интерфейс Метрика
0.0.0.0 0.0.0.0 192.168.4.1 192.168.4.2 65
127.0.0.0 255.0.0.0 On-link 127.0.0.1 331
127.0.0.1 255.255.255.255 On-link 127.0.0.1 331
127.255.255.255 255.255.255.255 On-link 127.0.0.1 331
192.168.3.0 255.255.255.0 192.168.4.1 192.168.4.2 66
192.168.3.50 255.255.255.255 192.168.4.1 192.168.4.2 66
192.168.4.0 255.255.255.0 On-link 192.168.4.2 321
192.168.4.2 255.255.255.255 On-link 192.168.4.2 321
192.168.4.255 255.255.255.255 On-link 192.168.4.2 321
192.168.7.0 255.255.255.0 192.168.4.1 192.168.4.2 66
224.0.0.0 240.0.0.0 On-link 127.0.0.1 331
224.0.0.0 240.0.0.0 On-link 192.168.4.2 321
255.255.255.255 255.255.255.255 On-link 127.0.0.1 331
255.255.255.255 255.255.255.255 On-link 192.168.4.2 321
===========================================================================
Клиент LAN (192.168.3.50) raspberry
~$ netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.4.0 192.168.3.1 255.255.255.0 UG 0 0 0 eth0
192.168.7.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0