На винде настраивал 3proxy, всё работало c такими же настройками. Пытаюсь настроить на raspberry pi 4 (Raspberry Pi OS), через сетевую карту прокси работает, а через модемы не хочет.

В конфиге прописал вот так:
socks -n -p3128 -a
socks -n -a -p8002 -i192.168.1.150 -e192.168.8.100

После этого сокс 192.168.1.150:3128 работает, а 192.168.1.150:8002 не работает.

Ниже привожу результаты некоторых команд:
---
pi@raspberrypi:~ $ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    202    0        0 eth0
0.0.0.0         192.168.8.1     0.0.0.0         UG    204    0        0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U     202    0        0 eth0
192.168.8.0     0.0.0.0         255.255.255.0   U     204    0        0 eth1
---

pi@raspberrypi:~ $ ip route show
default via 192.168.1.1 dev eth0 proto dhcp src 192.168.1.150 metric 202
default via 192.168.8.1 dev eth1 proto dhcp src 192.168.8.100 metric 204
192.168.1.0/24 dev eth0 proto dhcp scope link src 192.168.1.150 metric 202
192.168.8.0/24 dev eth1 proto dhcp scope link src 192.168.8.100 metric 204
---

pi@raspberrypi:~ $ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.150  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::191e:e72d:4ca7:5c02  prefixlen 64  scopeid 0x20<link>
        ether dc:a6:32:3c:0a:2c  txqueuelen 1000  (Ethernet)
        RX packets 11534  bytes 4578480 (4.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2616  bytes 352425 (344.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.8.100  netmask 255.255.255.0  broadcast 192.168.8.255
        inet6 fe80::c0c2:eace:aa05:e3ee  prefixlen 64  scopeid 0x20<link>
        ether 0c:5b:8f:27:8a:63  txqueuelen 1000  (Ethernet)
        RX packets 71  bytes 30523 (29.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 26  bytes 3787 (3.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 9  bytes 524 (524.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 9  bytes 524 (524.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether dc:a6:32:3c:0a:2e  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0