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PyCoder
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Joined: 07 Jul 2016
Posts: 6

PostPosted: Mon May 14, 2018 7:26 pm    Post subject: Questions about Iproute2 Reply with quote

Hi Guys

Whats the Iproute2 equivalent for this route command?

Code:
route add default gw 192.168.0.1 wlan0


I read some examples and tutorials but they dont work as example:

Code:
ip route add default via 192.168.0.1 dev wlan0


But like i said, it doesn't work:

Code:
root@omv:~# ip route add default via 192.168.0.1 dev wlan0
RTNETLINK answers: No such process
root@omv:~#





Can someone explain me the correct command?
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khayyam
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PostPosted: Mon May 14, 2018 8:56 pm    Post subject: Reply with quote

PyCoder ...

Code:
# ip route add 192.168.0.0/24 via 192.168.0.1

best ... khay
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PyCoder
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Posts: 6

PostPosted: Mon May 14, 2018 9:50 pm    Post subject: Reply with quote

khayyam wrote:
PyCoder ...

Code:
# ip route add 192.168.0.0/24 via 192.168.0.1

best ... khay


Not working ----> RTNETLINK answers: File exist


Here is my complete output:


Code:
root@omv:~# route -n
Kernel-IP-Routentabelle
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0


Code:

root@omv:~# ip route add 192.168.0.0/24 via 192.168.0.1
RTNETLINK answers: File exists


Code:
root@omv:~# ip route show
default via 192.168.0.1 dev eth0
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.10
192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.11
root@omv:~# ip route del 192.168.0.0/24 via 192.168.0.1
RTNETLINK answers: No such process


Code:

root@omv:~# ip route show
default via 192.168.0.1 dev eth0
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.10
192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.11



But "route add default gw 192.168.0.1 wlan0" works... :(

Code:
root@omv:~# route -n
Kernel-IP-Routentabelle
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 wlan0
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0
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khayyam
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PostPosted: Tue May 15, 2018 12:38 am    Post subject: Reply with quote

PyCoder ...

is wasn't clear from your initial description you wanted two "default" routes. The reason it's "default" is that, as the name suggests, this is a singular parameter for a given system, it can be done (see here and here) but I don't think you actually want this (because from the above it seems they both point to that one gateway). So, why do you think you need this?

best ... khay
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PyCoder
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PostPosted: Tue May 15, 2018 1:14 pm    Post subject: Reply with quote

khayyam wrote:
PyCoder ...

is wasn't clear from your initial description you wanted two "default" routes. The reason it's "default" is that, as the name suggests, this is a singular parameter for a given system, it can be done (see here and here) but I don't think you actually want this (because from the above it seems they both point to that one gateway). So, why do you think you need this?

best ... khay


My problem is... i have eth0 and wlan0 but wlan0 is not able to ping something outside of my lan e.g. google.com

I posted my problem here: https://forum.openmediavault.org/index.php/Thread/22875-Wifi-wlan0-not-working-outside-of-my-LAN/?postID=174896#post174896

But no1 could help me, so i decided to ask my old trusty gentoo boys :)


I know the Thomas Krenn Howto but its not working ether ---> same error msg (file exists or ressource not found)
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krinn
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PostPosted: Tue May 15, 2018 3:16 pm    Post subject: Reply with quote

you could add routes_wlan0="default via 192.168.0.1" in /etc/conf.d/net
or you could bridge the two interface and use the bridge route to reach the gw (see https://wiki.gentoo.org/wiki/Network_bridge)

And you should also have a default route for localhost, something you are lacking. Do you lack loopback init.d service in boot runlevel?


And the error "file exist" is just telling you that this route is already create, so it doesn't work because the route exists, but the command do works.
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NeddySeagoon
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PostPosted: Tue May 15, 2018 5:07 pm    Post subject: Reply with quote

PyCoder,

Two interfaces in the same subnet is usually a very bad thing.
Tell us what you want to achieve.

iproute2 tries to protect you from yourself a little more than the route command.
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NeddySeagoon

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those that do backups
those that have never had a hard drive fail.
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John R. Graham
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PostPosted: Tue May 15, 2018 6:02 pm    Post subject: Reply with quote

Moved from Networking & Security to Unsupported Software. OP is apparently running OpenMediaVault, not Gentoo, so it fits better here.

- John
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