Cannot solve bridging wlan and eth0 on Debian

tkmagnet · 04-07-2019, 02:51 PM

I'm new to Linux, so my knowledge is very limited. I am running Debian 9 and need to use it as a bridge. The wlan connects to an AP where I get my internet. The eth0 connects to a switch that has other 3 clients, 1 Windows server, and a file storage server. After much reading, I used the site below:
https://wiki.debian.org/BridgeNetwor...ctionsProxyArp

I configured as per the instructions, but the bridge still does not work. I tried to ping across networks, but can't (host unreachable). I also noticed that when I restarted my machine as per the instructions, I lost wireless connectivity to the internet.

wlan: 10.0.141.0/23
internal network: 192.168.1.0/24

ferrari · 04-07-2019, 04:40 PM

This might depend on your wifi hardware perhaps. In any case share all the definitive details...

Code:

ip a

Code:

ip r

Code:

lspci -nnk|grep -iA3 net

The paprouted daemon active?

Code:

ps -A|grep paprouted

tkmagnet · 04-08-2019, 08:41 AM

Here are the results:

Code:

# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    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
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 34:e6:d7:1a:a8:71 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.125/24 brd 192.168.1.255 scope global dynamic eno1
       valid_lft 431921sec preferred_lft 431921sec
    inet6 fe80::a01f:ebc8:c290:1446/64 scope link 
       valid_lft forever preferred_lft forever
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether d0:53:49:b8:9d:1b brd ff:ff:ff:ff:ff:ff
    inet 10.0.144.180/31 brd 10.0.144.181 scope global wlp3s0
       valid_lft forever preferred_lft forever
    inet6 2620:58:4c00:96:47fd:a416:d87:11e5/128 scope global dynamic 
       valid_lft 1036046sec preferred_lft 690446sec
    inet6 2620:58:4c00:96:cf84:cac9:798f:35ca/64 scope global noprefixroute dynamic 
       valid_lft 2591888sec preferred_lft 604688sec
    inet6 fe80::fd1:78d2:6605:941a/64 scope link 
       valid_lft forever preferred_lft forever

Code:

# ip r
default via 192.168.1.1 dev eno1 proto static metric 100 
default via 10.0.144.1 dev wlp3s0 proto static metric 600 
10.0.144.1 dev wlp3s0 proto static scope link metric 600 
10.0.144.180/31 dev wlp3s0 proto kernel scope link src 10.0.144.180 metric 600 
169.254.0.0/16 dev wlp3s0 scope link metric 1000 
192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.125 metric 100

Code:

# lspci -nk | grep -iA3 net
#

Code:

# ps -A | grep paprouted
#

ferrari · 04-08-2019, 02:16 PM

Sorry that should have been 'parpouted'. Check that the daemon is active.

ferrari · 04-08-2019, 02:17 PM

Another how to...
https://blog.pgeiser.com/posts/2017/...-an-arp-proxy/

ferrari · 04-08-2019, 02:19 PM

...and your 'lspci -nk...' command needed to be 'lspci -nnk...'

tkmagnet · 04-09-2019, 04:10 PM

Code:

# lspci -nnk | grep -iA3 net
00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-LM [8086:153a] (rev 04)
	Subsystem: Dell Ethernet Connection I217-LM [1028:05be]
	Kernel driver in use: e1000e
	Kernel modules: e1000e
00:1a.0 USB controller [0c03]: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 [8086:8c2d] (rev 04)
--
03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
	Subsystem: Dell Wireless 1506 WLAN Half Mini-Card [1028:0208]
	Kernel driver in use: ath9k
	Kernel modules: ath9k

How do I check that the daemon is active?

ferrari · 04-09-2019, 05:30 PM

Check the process table

Code:

ps -A|grep parprouted

It would usually have been started manually or via your '/etc/network/interfaces' config file

Code:

post-up /usr/sbin/parprouted eno1 wlp3s0
post-down /usr/bin/killall /usr/sbin/parprouted

tkmagnet · 04-10-2019, 09:50 AM

This is what I have in my /etc/network/interfaces file:

Code:

# The loopback network interface
auto lo
iface lo inet loopback

# The ethernet network interface
#auto eno1
#iface eno1 inet static
#	address 192.168.1.10
#	netmask 255.255.255.0
#	gateway 192.168.1.254

# The wireless network interface
#auto wlp3s0
#iface wlp3s0 inet static
#	address 192.168.1.11
#	netmask 255.255.255.0
#	gateway 192.168.1.254

#bridgeProxyArp
auto eno1
allow-hotplug eno1
iface eno1 inet manual

auto wlp3s0
allow-hotplug wlp3s0
iface wlp3s0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
	post-up /usr/sbin/parprouted eno1 wlp3s0
	post-down /usr/bin/killall /usr/sbin/parprouted
	#clone the dgcp-allocated IP to eno1 so dhcp-helper will relay for the correct subnet
	post-up /sbin/ip addr add $(/sbin/ip addr show wlp3s0 | perl -wne 'm|^\s+inet (,*)/| && print $1')/32 dev eno1
	post-down /sbin/ifdown eno1

When I tried to run ps -A|grep parprouted, nothing showed up.

ferrari · 04-10-2019, 02:21 PM

But did you definitely install the parprouted package?

tkmagnet · 04-11-2019, 12:16 PM

yes parprouted definitely got installed.

Code:

# aptitude install parprouted
parprouted is already installed at the requested version (0.70-2+b1)
parprouted is already installed at the requested version (0.70-2+b1)
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.

ferrari · 04-11-2019, 07:04 PM

What happens if you run it manually?

Code:

/usr/sbin/parprouted eno1 wlp3s0

Then check

Code:

ps -A| grep parprouted

tkmagnet · 04-12-2019, 08:33 AM

Code:

# /usr/sbin/parprouted eno1 wlp3s0
#
# ps -A|grep parprouted
22301 ?        00:00:00 parprouted
#

ferrari · 04-12-2019, 03:34 PM

Ok, and then is the proxy ARP working as expected?

tkmagnet · 04-18-2019, 08:23 AM

I'm assuming not since i still cannot get internet from the clients.