how to make my raspberry pi act as gateway for eth0 subnet using eth1 internet connection?

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I have set my lapton and ethernet+wifi router to an 192.168.10.x subnet with fixed IP setting.

I have another subnet on 192.168.9.x range managed by DHCP by a 4G wifi router.

I have a raspberry pi that has an address both to the 10 network (via ethernet) and on the 9 network via usb (seen as eth1 IPv6). How should I configure this raspberry pi to act as gateway and sharethe internet connection available on its eth1 interface to the laptop that is on the 10 network?

Please note I can ping the raspberry pi 10 address from the laptop, so I think I am only missing instructions for the Pi to route things properly and maybe a suitable gateway setting on the laptop.

Here my ifconfig on the various devices

* laptop *

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

        ether dc:a9:04:6f:28:13

        inet6 fe80::1025:32eb:e83:39d2%en0 prefixlen 64 secured scopeid 0xc

        inet 192.168.10.123 netmask 0xffffff00 broadcast 192.168.10.255

        nd6 options=201<PERFORMNUD,DAD>

        media: autoselect

        status: active

* Router *

MAC Address 

00-11-95-2c-f9-e8

IP Address 

192.168.10.109

Subnet Mask 

255.255.255.0

DHCP Server 

Disabled

and the * raspberry *

eth0      Link encap:Ethernet  HWaddr b8:27:eb:09:0a:f5  

          inet addr:192.168.10.110  Bcast:192.168.10.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:1842 errors:1 dropped:0 overruns:0 frame:0

          TX packets:451 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:482427 (471.1 KiB)  TX bytes:89151 (87.0 KiB)



eth1      Link encap:Ethernet  HWaddr 00:1e:10:1f:00:00  

          inet addr:192.168.9.100  Bcast:192.168.9.255  Mask:255.255.255.0

          inet6 addr: fe80::b0b4:a7ba:fee8:b03/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:133 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:28446 (27.7 KiB)  TX bytes:30440 (29.7 KiB)

asked Nov 25 at 11:44

Rho Phi

1112

Have you tried the "Turn a raspberry into a router" instructions already found elsewhere on the web?
– grawity
Nov 25 at 11:47

Thanks for chiming in. Yes, I read the manual(s). Forgot to mention that most tutorials use DHCP, and I am not. Besides there is a transition in networking from Jessie to Strech that makes more challenging to follow tutorials.
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie) sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

FYI raspberrypi.stackexchange.com/questions/48307/… is the cleanest Jessie/Strech-aware tutorial I found.
– Rho Phi
Nov 25 at 12:30

add a comment |

up vote
0
down vote

favorite

I have set my lapton and ethernet+wifi router to an 192.168.10.x subnet with fixed IP setting.

I have another subnet on 192.168.9.x range managed by DHCP by a 4G wifi router.

Please note I can ping the raspberry pi 10 address from the laptop, so I think I am only missing instructions for the Pi to route things properly and maybe a suitable gateway setting on the laptop.

Here my ifconfig on the various devices

* laptop *

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

        ether dc:a9:04:6f:28:13

        inet6 fe80::1025:32eb:e83:39d2%en0 prefixlen 64 secured scopeid 0xc

        inet 192.168.10.123 netmask 0xffffff00 broadcast 192.168.10.255

        nd6 options=201<PERFORMNUD,DAD>

        media: autoselect

        status: active

* Router *

MAC Address 

00-11-95-2c-f9-e8

IP Address 

192.168.10.109

Subnet Mask 

255.255.255.0

DHCP Server 

Disabled

and the * raspberry *

eth0      Link encap:Ethernet  HWaddr b8:27:eb:09:0a:f5  

          inet addr:192.168.10.110  Bcast:192.168.10.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:1842 errors:1 dropped:0 overruns:0 frame:0

          TX packets:451 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:482427 (471.1 KiB)  TX bytes:89151 (87.0 KiB)



eth1      Link encap:Ethernet  HWaddr 00:1e:10:1f:00:00  

          inet addr:192.168.9.100  Bcast:192.168.9.255  Mask:255.255.255.0

          inet6 addr: fe80::b0b4:a7ba:fee8:b03/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:133 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:28446 (27.7 KiB)  TX bytes:30440 (29.7 KiB)

asked Nov 25 at 11:44

Rho Phi

1112

Have you tried the "Turn a raspberry into a router" instructions already found elsewhere on the web?
– grawity
Nov 25 at 11:47

Thanks for chiming in. Yes, I read the manual(s). Forgot to mention that most tutorials use DHCP, and I am not. Besides there is a transition in networking from Jessie to Strech that makes more challenging to follow tutorials.
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie) sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

FYI raspberrypi.stackexchange.com/questions/48307/… is the cleanest Jessie/Strech-aware tutorial I found.
– Rho Phi
Nov 25 at 12:30

add a comment |

up vote
0
down vote

favorite

I have set my lapton and ethernet+wifi router to an 192.168.10.x subnet with fixed IP setting.

I have another subnet on 192.168.9.x range managed by DHCP by a 4G wifi router.

Please note I can ping the raspberry pi 10 address from the laptop, so I think I am only missing instructions for the Pi to route things properly and maybe a suitable gateway setting on the laptop.

Here my ifconfig on the various devices

* laptop *

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

        ether dc:a9:04:6f:28:13

        inet6 fe80::1025:32eb:e83:39d2%en0 prefixlen 64 secured scopeid 0xc

        inet 192.168.10.123 netmask 0xffffff00 broadcast 192.168.10.255

        nd6 options=201<PERFORMNUD,DAD>

        media: autoselect

        status: active

* Router *

MAC Address 

00-11-95-2c-f9-e8

IP Address 

192.168.10.109

Subnet Mask 

255.255.255.0

DHCP Server 

Disabled

and the * raspberry *

eth0      Link encap:Ethernet  HWaddr b8:27:eb:09:0a:f5  

          inet addr:192.168.10.110  Bcast:192.168.10.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:1842 errors:1 dropped:0 overruns:0 frame:0

          TX packets:451 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:482427 (471.1 KiB)  TX bytes:89151 (87.0 KiB)



eth1      Link encap:Ethernet  HWaddr 00:1e:10:1f:00:00  

          inet addr:192.168.9.100  Bcast:192.168.9.255  Mask:255.255.255.0

          inet6 addr: fe80::b0b4:a7ba:fee8:b03/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:133 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:28446 (27.7 KiB)  TX bytes:30440 (29.7 KiB)

asked Nov 25 at 11:44

Rho Phi

1112

I have set my lapton and ethernet+wifi router to an 192.168.10.x subnet with fixed IP setting.

I have another subnet on 192.168.9.x range managed by DHCP by a 4G wifi router.

Please note I can ping the raspberry pi 10 address from the laptop, so I think I am only missing instructions for the Pi to route things properly and maybe a suitable gateway setting on the laptop.

Here my ifconfig on the various devices

* laptop *

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

        ether dc:a9:04:6f:28:13

        inet6 fe80::1025:32eb:e83:39d2%en0 prefixlen 64 secured scopeid 0xc

        inet 192.168.10.123 netmask 0xffffff00 broadcast 192.168.10.255

        nd6 options=201<PERFORMNUD,DAD>

        media: autoselect

        status: active

* Router *

MAC Address 

00-11-95-2c-f9-e8

IP Address 

192.168.10.109

Subnet Mask 

255.255.255.0

DHCP Server 

Disabled

and the * raspberry *

eth0      Link encap:Ethernet  HWaddr b8:27:eb:09:0a:f5  

          inet addr:192.168.10.110  Bcast:192.168.10.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:1842 errors:1 dropped:0 overruns:0 frame:0

          TX packets:451 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:482427 (471.1 KiB)  TX bytes:89151 (87.0 KiB)



eth1      Link encap:Ethernet  HWaddr 00:1e:10:1f:00:00  

          inet addr:192.168.9.100  Bcast:192.168.9.255  Mask:255.255.255.0

          inet6 addr: fe80::b0b4:a7ba:fee8:b03/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:133 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:28446 (27.7 KiB)  TX bytes:30440 (29.7 KiB)

linux networking wireless-networking router bridge

asked Nov 25 at 11:44

Rho Phi

1112

asked Nov 25 at 11:44

Rho Phi

1112

asked Nov 25 at 11:44

Rho Phi

1112

asked Nov 25 at 11:44

Rho Phi

1112

asked Nov 25 at 11:44

Rho Phi

1112

Have you tried the "Turn a raspberry into a router" instructions already found elsewhere on the web?
– grawity
Nov 25 at 11:47

Thanks for chiming in. Yes, I read the manual(s). Forgot to mention that most tutorials use DHCP, and I am not. Besides there is a transition in networking from Jessie to Strech that makes more challenging to follow tutorials.
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie) sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

FYI raspberrypi.stackexchange.com/questions/48307/… is the cleanest Jessie/Strech-aware tutorial I found.
– Rho Phi
Nov 25 at 12:30

add a comment |

Have you tried the "Turn a raspberry into a router" instructions already found elsewhere on the web?
– grawity
Nov 25 at 11:47

Thanks for chiming in. Yes, I read the manual(s). Forgot to mention that most tutorials use DHCP, and I am not. Besides there is a transition in networking from Jessie to Strech that makes more challenging to follow tutorials.
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie) sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

FYI raspberrypi.stackexchange.com/questions/48307/… is the cleanest Jessie/Strech-aware tutorial I found.
– Rho Phi
Nov 25 at 12:30

Have you tried the "Turn a raspberry into a router" instructions already found elsewhere on the web?
– grawity
Nov 25 at 11:47

Thanks for chiming in. Yes, I read the manual(s). Forgot to mention that most tutorials use DHCP, and I am not. Besides there is a transition in networking from Jessie to Strech that makes more challenging to follow tutorials.
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie)

sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT

as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

I have made some progress with iptables (still available in Jessie)

sudo iptables -F; sudo iptables -t nat -F; sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE; sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT; sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT

as here github.com/arpitjindal97/raspbian-recipes/blob/master/…
– Rho Phi
Nov 25 at 12:26

FYI raspberrypi.stackexchange.com/questions/48307/… is the cleanest Jessie/Strech-aware tutorial I found.
– Rho Phi
Nov 25 at 12:30

add a comment |

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