I would like to set up my Raspberry Pi as static IP device, which communicates over Ethernet (through an IP like 192.168.20.X), and at the same time it should be connected to the internet through WLAN (192.168.1.1). However when I allow 'auto eth0' then it does not configure the wlan0. I would like both of them to work. My current configuration is given below:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.20.40
netmask 255.255.255.0
network 192.168.20.1
gateway 192.168.20.1
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
What am I missing? Any help would be appreciated. Thanks in advance.
SOLVED:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.20.45
netmask 255.255.255.0
network 192.168.20.1
gateway 192.168.1.1 # Changing this worked
dns-nameservers 8.8.8.8 8.8.4.4
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
SOLVED:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.20.45
netmask 255.255.255.0
network 192.168.20.1
gateway 192.168.1.1 # Changing this worked
dns-nameservers 8.8.8.8 8.8.4.4
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
Configure "wlan0" with a static IP
it will work fine
Related
I tried to build a network using a shell script
However, I got an error like the image(:not found, : file name too long)
I've been wandering for days, where and how to fix it.
#!/bin/bash
sysctl -w net.ipv4.ip_forward=1
hn=$(hostname)
echo $hn
case $hn in
"node0")
echo"
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.137.8
netmask 255.255.255.0
network 192.168.137.0
gateway 192.168.137.1
auto eth1
iface eth1 inet static
address 10.0.30.9
netmask 255.255.255.0
network 10.0.30.0
gateway 10.94.30.8
">/etc/network/interfaces
;;
"node1")
echo"
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.137.9
netmask 255.255.255.0
network 192.168.137.1
gateway 192.168.137.1
auto eth1
iface eth1 inet static
address 10.94.10.8
netmask 255.255.255.0
network 10.94.10.0
gateway 10.94.10.9
">/etc/network/interfaces
;;
"node2")
echo"
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.94.10.9
netmask 255.255.255.0
network 10.94.10.0
gateway 10.94.10.8
auto eth1
iface eth1 inet static
address 10.94.20.8
netmask 255.255.255.0
network 10.94.20.0
gateway 10.94.20.9
">/etc/network/interfaces
;;
"node3")
echo"
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.94.20.9
netmask 255.255.255.0
network 10.94.20.0
gateway 10.94.20.8
auto eth1
iface eth1 inet static
address 10.94.30.8
netmask 255.255.255.0
network 10.94.30.0
gateway 10.94.30.9
">/etc/network/interfaces
;;
esac
echo"
nameserver 192.168.137.1
search localdomain
">/etc/resolv.conf
systemctl restart networking.service
I suggest you use the heredoc (here document) approach to create your output files instead of echo. For example,
"node1")
cat << EOF > /etc/network/interfaces
All lines from here to the line before the EOF below will be written to the file.
... multiple lines deleted ...
This last line is indented by two spaces.
EOF
;;
I have an OdroidH2 with docker setup.
It was working fine for a few months and suddenly, out of nowhere it stopped having any internet/intranet connectivity.
It's connectivity is going through an Ethernet cable, not WiFi and the interface that is supposed to have the connection is enp3s0 with an ip address of 192.168.1.100.
I have performed the following troubleshooting steps:
Restart (of course, always the first step)
Checked interface settings via ifconfig and also in /etc/network/interfaces
Checked the routing via route -n
Checked iptables (iptables was populated with the docker configuration, I've flushed the iptables including nat and mangle and set the default policy to ACCEPT for input, forward and output. Restarted the networking service afterwards)
Checked if it was able to ping itself and the default gateway (it is able to ping itself but not the gateway, or any other devices)
Checked if another device was able to ping the OdroidH2 (host unreachable)
Checked dmesg and for some reason, I had 2 firmwares that were not able to be loaded (already installed and rebooted after installation):
rtl_nic/rtl8168g-2.fw (after checking, this is the firmware for the network interfaces)
i915/glk_dmc_ver1_04.bin (didn't research much about this one, something to do with runtime power management??)
After all of these steps, I still am unable to get the network connectivity going.
Below you can find information regarding my current configuration:
dmesg output
Stackoverflow does not allow me to put all the information from my dmesg output so I had to put it on google drive: dmesg_output
/etc/hosts
127.0.0.1 localhost
192.168.1.100 dc1 dc1.samdom.andrewoliverhome.local samdom.andrewoliverhome.local
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
iptables -nvL output (after clearing and reloading the networking service)
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
/etc/resolv.conf
#nameserver 127.0.0.1
#nameserver 8.8.8.8
#nameserver 8.8.4.4
search samdom.andrewoliverhome.local
#domain samdom.andrewoliverhome.local
nameserver 192.168.1.100
nameserver 8.8.8.8
route -n output
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 enp3s0
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
172.18.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker_gwbridge
172.19.0.0 0.0.0.0 255.255.0.0 U 0 0 0 br-debc10cb5b21
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 enp3s0
/etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo enp2s0 enp3s0
#auto lo br0
iface lo inet loopback
# The primary network interface
iface enp2s0 inet dhcp
allow-hotplug enp2s0 enp3s0
#iface enp2s0 inet manual
# post-up iptables-restore < /etc/iptables.up.rules
# This is an autoconfigured IPv6 interface
#iface enp2s0 inet dhcp
iface enp3s0 inet static
address 192.168.1.100
netmask 255.255.255.0
# broadcast 169.254.99.255
network 192.168.1.0
gateway 192.168.1.254
#iface enp2s0 inet manual
#iface enp3s0 inet manual
#iface br0 inet static
# bridge_ports enp2s0 enp3s0
# address 192.168.1.100
# broadcast 192.168.1.255
# netmask 255.255.255.0
# gateway 192.168.1.254
#
In /etc/resolv.conf, the reason I have the primary nameserver to be itself is because I am running a docker container that is serving as a samba-ad-dc.
In order for OdroidH2 to find all of my devices in the domain, it needs to make dns queries to the samba dc, if samba is not able to find a dns record, it will autoforward it to 8.8.8.8.
Any help would be greatly appreciated (:
After all the troubleshooting done, the issue is not within the OdroidH2 itself, it was with my router.
The LAN port that I'm using malfunctioned. I switched the Ethernet cable to a different LAN port and it worked.
I have a Xen dom0 running Debian Wheezy (7.8) and Xen 4.1, set up with bridged networking.
199.XXX.161.64 is the dom0 gateway.
199.XXX.161.65 is the dom0 address.
192.XXX.13.128/28 is the subnet for the domU's.
Configuration dom0:
root#dom0:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet manual
auto xenbr0
iface xenbr0 inet static
address 199.XXX.161.65
netmask 255.255.255.254
network 199.XXX.161.64
broadcast 199.XXX.161.65
gateway 199.XXX.161.64
dns-nameservers 199.XXX.162.41 199.XXX.162.141
bridge_ports eth0
bridge_stp off # disable Spanning Tree Protocol
bridge_fd 0 # no forwarding delay
bridge_maxwait 0 # no delay before a port becomes available
allow-hotplug xenbr0 # start interface on hotplug event
root#dom0:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master xenbr0 state UP qlen 1000
link/ether 00:25:90:d5:06:1a brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:25:90:d5:06:1b brd ff:ff:ff:ff:ff:ff
4: xenbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 00:25:90:d5:06:1a brd ff:ff:ff:ff:ff:ff
inet 199.XXX.161.65/31 brd 199.XXX.161.65 scope global xenbr0
inet6 fe80::XXXX:90ff:fed5:61a/64 scope link
valid_lft forever preferred_lft forever
8: vif1.0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master xenbr0 state UP qlen 32
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
inet6 fe80::fcff:ffff:feff:ffff/64 scope link
valid_lft forever preferred_lft forever
root#dom0:~# brctl show
bridge name bridge id STP enabled interfaces
xenbr0 8000.002590d5061a no eth0
vif1.0
root#dom0:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 199.XXX.161.64 0.0.0.0 UG 0 0 0 xenbr0
192.XXX.13.128 0.0.0.0 255.255.255.240 U 0 0 0 xenbr0
199.XXX.161.64 0.0.0.0 255.255.255.254 U 0 0 0 xenbr0
root#dom0:~# iptables -L -n
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-out vif1.0 --physdev-is-bridged
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-in vif1.0 --physdev-is-bridged udp spt:68 dpt:67
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-out vif1.0 --physdev-is-bridged
ACCEPT all -- 192.XXX.13.129 0.0.0.0/0 PHYSDEV match --physdev-in vif1.0 --physdev-is-bridged
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
This host can reach its gateway and thus the internet.
root#dom0:~# ping -c 1 199.XXX.161.64
PING 199.XXX.161.64 (199.XXX.161.64) 56(84) bytes of data.
64 bytes from 199.XXX.161.64: icmp_req=1 ttl=64 time=0.459 ms
--- 199.XXX.161.64 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.459/0.459/0.459/0.000 ms
I also have a domU (with the same OS) which needs a primary IP address in a different subnet. There is no gateway on the network in this subnet. I want to keep my network setup bridged (no dom0 routing or NAT) so I added the dom0 gateway as the gateway for the domU as described in this blogpost.
Configuration domU:
root#domU:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:16:3e:b7:7e:cc brd ff:ff:ff:ff:ff:ff
inet 192.XXX.13.129/28 brd 192.XXX.13.143 scope global eth0
inet6 fe80::XXXX:3eff:feb7:7ecc/64 scope link
valid_lft forever preferred_lft forever
root#domU:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 199.XXX.161.64 0.0.0.0 UG 0 0 0 eth0
192.XXX.13.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
199.XXX.161.64 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
With this configuration the domU still has no network access. To test if the bridge was working I manually added a route to dom0.
root#domU:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 199.XXX.161.64 0.0.0.0 UG 0 0 0 eth0
192.XXX.13.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
199.XXX.161.64 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
199.XXX.161.65 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
Now the dom0 and domU can communicate through the bridge.
root#domU:~# ping -c 1 199.XXX.161.65
PING 199.XXX.161.65 (199.XXX.161.65) 56(84) bytes of data.
64 bytes from 199.XXX.161.65: icmp_req=1 ttl=64 time=0.037 ms
--- 199.XXX.161.65 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.037/0.037/0.037/0.000 ms
root#dom0:~# ping -c 1 192.XXX.13.129
PING 192.184.13.129 (192.XXX.13.129) 56(84) bytes of data.
64 bytes from 192.XXX.13.129: icmp_req=1 ttl=64 time=0.100 ms
--- 192.XXX.13.129 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.100/0.100/0.100/0.000 ms
However, the domU still can't reach the gateway.
root#domU:~# ping -c 1 199.XXX.161.64
PING 199.XXX.161.64 (199.XXX.161.64) 56(84) bytes of data.
From 192.XXX.13.129 icmp_seq=1 Destination Host Unreachable
--- 199.XXX.161.64 ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms
I have attempted to log establish if the traffic is actually being sent through the bridge by inserting a -j LOG rule at the top of the INPUT, OUTPUT and FORWARD iptables chains. When the domU attempts to ping the gateway the dom0 does not log a single packet. I also tried manually adding an entry for the gateway in domU's ARP table but the results were the same. The domU can't reach the gateway and thus has no network access other than being able to communicate with dom0 via static route.
So if I am understanding this correctly, the following is the network configuration for your DomU:
192.XXX.13.129/28 - DomU IP Address
199.XXX.161.64 - DomU GW Address
The problem is that your DomU does not have a route (layer 3) to allow it to talk to the GW address since the GW address is in a different subnet. So even though the router is on the same layer 2 network, the router (if it is processing your packets) does not know about your layer 3 network and is sending it's responses to it's default gateway.
That you are able to ping the Dom0 from the DomU is odd and probably the result of both the Dom0 and the DomU using the same Linux Bridge (which it not a true ethernet switch, more like a dumb hub).
The simple fix is to add an address from your DomU network to the LAN interface on your router.
The better fix would be to use VLANs to segment the different networks via layer 2 and replace Linux Bridges with Open vSwitch. This would completely isolate the Dom0 and DomU traffic so that they would be required to communication via a router and possibly a firewall.
I have a file that contains the following portion of text:
--------------begin------------------
uncomment for static IP
iface eth0 inet static
address 192.168.0.202
netmask 255.255.255.0
network 192.168.0.0
gateway 192.168.0.200
iface eth1 inet dhcp
---------------end---------------------
I would like to change the IP address into: 192.168.151.23
The text after being changed looking like this:
--------------begin------------------
uncomment for static IP
iface eth0 inet static
address 192.168.151.23
netmask 255.255.255.0
network 192.168.0.0
gateway 192.168.0.200
iface eth1 inet dhcp
---------------end---------------------
Can anyone help me with this?
I am trying to broadcast to 192.168.1.255 which is my broadcast address. ifconfig says
eth0 Link encap:Ethernet HWaddr 50:e5:49:51:0b:cb
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::52e5:49ff:fe51:bcb/64 Scope:Link
but If i do nc -uv 192.168.1.255 9999 it reports
nc: connect to 192.168.1.255 port 9999 (udp) failed: Permission denied
but nc -uv 192.168.0.255 9999 works fine
Try using socat instead since some nc tools don't support UDP broadcasting.
echo "HELLO" | socat - UDP4-DATAGRAM:192.168.1.255:9999,broadcast