[SOLVED] HOWTO add routes using /etc/conf.d/net

Message

bassvandijk · Post by **bassvandijk** » Mon Aug 29, 2005 10:52 am

I would like to add the following routes using the /etc/conf.d/net file:

route add -net 84.29.178.0 netmask 255.255.255.0 gw 84.29.178.1
route add -net 84.29.179.0 netmask 255.255.255.0 gw 84.29.178.1

I tried the follwing:

/etc/conf.d/net

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...
routes_eth1=( "84.29.178.0 netmask 255.255.255.0 gw 84.29.178.1"
                      "84.29.179.0 netmask 255.255.255.0 gw 84.29.178.1")
...

and

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...
routes_eth1=( "84.29.178.0/24 gw 84.29.178.1"
                      "84.29.179.0/24 gw 84.29.178.1" )
...

and

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...
routes_eth1=( "84.29.178.0/24 via 84.29.178.1"
                      "84.29.179.0/24 via 84.29.178.1")
...

But none of them work

If I specify:

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...
routes_eth1=( "84.29.178.0 via 84.29.178.1"
                      "84.29.179.0 via 84.29.178.1")
...

It will add the routes. But those are obviously not the routes I want because I need all the adresses from 84.29.178.0 to 84.29.178.255 to be routed to 84.29.178.1.

Ph0eniX · Post by **Ph0eniX** » Mon Aug 29, 2005 1:27 pm

bassvandijk wrote:I would like to add the following routes using the /etc/conf.d/net file:
Code: Select all
route add -net 84.29.178.0 netmask 255.255.255.0 gw 84.29.178.1
route add -net 84.29.179.0 netmask 255.255.255.0 gw 84.29.178.1
I tried the follwing:

/etc/conf.d/net
Code: Select all
...
routes_eth1=( "84.29.178.0 netmask 255.255.255.0 gw 84.29.178.1"
                      "84.29.179.0 netmask 255.255.255.0 gw 84.29.178.1")
...
and
Code: Select all
...
routes_eth1=( "84.29.178.0/24 gw 84.29.178.1"
                      "84.29.179.0/24 gw 84.29.178.1" )
...
and
Code: Select all
...
routes_eth1=( "84.29.178.0/24 via 84.29.178.1"
                      "84.29.179.0/24 via 84.29.178.1")
...
But none of them work

If I specify:
Code: Select all
...
routes_eth1=( "84.29.178.0 via 84.29.178.1"
                      "84.29.179.0 via 84.29.178.1")
...
It will add the routes. But those are obviously not the routes I want because I need all the adresses from 84.29.178.0 to 84.29.178.255 to be routed to 84.29.178.1.

I'm not sure what the format for /etc/conf.d/net is but you can add

Code: Select all

route add -net 84.29.178.0 netmask 255.255.254.0 gw 84.29.178.1

to /etc/conf.d/local.start ...note the 23 bit subnet (.254.0) which allows for both of your Class C (84.29.178.0/24 and 84.29.179.0/24) ranges to be included on one line.

bassvandijk · Post by **bassvandijk** » Mon Aug 29, 2005 1:36 pm

Ph0eniX wrote:...
I'm not sure what the format for /etc/conf.d/net is but you can add
Code: Select all
route add -net 84.29.178.0 netmask 255.255.254.0 gw 84.29.178.1
to /etc/conf.d/local.star

I know, but I would like to have my network settings in one place.

Ph0eniX wrote:...
note the 23 bit subnet (.254.0) which allows for both of your Class C (84.29.178.0/24 and 84.29.179.0/24) ranges to be included on one line.

Good tip, thanks!

Ph0eniX · Post by **Ph0eniX** » Mon Aug 29, 2005 1:39 pm

I'd try this in your /etc/conf.d/net:

Code: Select all


routes_eth1=( "84.29.178.0 netmask 255.255.254.0 via 84.29.178.1" )

bassvandijk · Post by **bassvandijk** » Mon Aug 29, 2005 2:51 pm

Ph0eniX wrote:I'd try this in your /etc/conf.d/net:
Code: Select all
routes_eth1=( "84.29.178.0 netmask 255.255.254.0 via 84.29.178.1" )

Unfortunately that didn't work.

This is my /etc/conf.d/net

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# eth0 = LAN
# eth1 = Internet

config_eth0=("192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255")

config_eth1="dhcp"
dhcpcd_eth1="-R -h CP179741-A"
routes_eth1=( "84.29.178.0 netmask 255.255.254.0 via 84.29.178.1" )

Code: Select all

pts/1 ~
[root@tooslow] route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         84.29.178.1     0.0.0.0         UG    0      0        0 eth1
pts/1 ~
[root@tooslow] /etc/init.d/net.eth1 restart
 * Caching service dependencies ...                                                                [ ok ]
 * Stopping eth1
 *   Bringing down eth1
 *     Stopping dhcpcd on eth1 ...                                                                 [ ok ]
 *     Shutting down eth1 ...                                                                      [ ok ]
 * Starting eth1
 *   Bringing up eth1
 *     dhcp
 *       Running dhcpcd ...                                                                        [ ok ]
 *       eth1 received address 84.29.179.201
 *   Adding routes
 *     84.29.178.0 netmask 255.255.254.0 gw 84.29.178.1 ...                                        [ !! ]
pts/1 ~
[root@tooslow] route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         84.29.178.1     0.0.0.0         UG    0      0        0 eth1

Ph0eniX · Post by **Ph0eniX** » Mon Aug 29, 2005 2:56 pm

Wait, what exactly are you trying to accomplish? ...from your routing table it looks like 84.29.178.1 is already your default router so adding static routes for specific nets to it will have no effect.

bassvandijk · Post by **bassvandijk** » Mon Aug 29, 2005 3:25 pm

Ph0eniX wrote:Wait, what exactly are you trying to accomplish?...

I need to communicate (HTTP/FTP/Whatever) with a host that's on the same network as I am. My ISP (@Home) blockes all connections between hosts that are on the same @Home network (They say this is for security reasons, which I understand). If I route @Home destinated packages (84.29.178.0 netmask 255.255.254.0) to the @Home gateway (84.29.178.1) then they will reach their target.

If I manually add the routes using route it works, but I would like to do it using the /etc/conf.d/net file because then I have all my network settings in one place.

Note that deleting the following route will also work (I think):

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84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1

Because then @Home destinated packages will use the default route:

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0.0.0.0         84.29.178.1     0.0.0.0         UG    0      0        0 eth1

UberLord · Post by **UberLord** » Tue Aug 30, 2005 7:14 am

I've just tested your config and it works with baselayout-1.12.0_pre6-r3

bassvandijk · Post by **bassvandijk** » Tue Aug 30, 2005 10:28 am

UberLord wrote:I've just tested your config and it works with baselayout-1.12.0_pre6-r3

I just emerged the masked baselayout-1.12.0_pre6-r3 (and dhcpcd-2.0.0 because baselayout gives an error when using a lower version).

Code: Select all

/etc/init.d/net.eth1 restart
 * Caching service dependencies ...                                                              [ ok ]
 * Stopping eth1
 *   Bringing down eth1
 *     Stopping dhcpcd on eth1 ...                                                               [ ok ]
 *     Shutting down eth1 ...                                                                    [ ok ]
 * Starting eth1
 *   Bringing up eth1
 *     dhcp
 *       Running dhcpcd ...                                                                      [ ok ]
 *       eth1 received address 84.29.179.201/23
 *   Adding routes
 *     84.29.178.0 netmask 255.255.254.0 via 84.29.178.1 ...
Error: either "to" is duplicate, or "netmask" is a garbage.

with this /etc/conf.d/net:

Code: Select all

# eth0 = LAN
# eth1 = Internet

config_eth0=("192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255")

config_eth1="dhcp"
dhcpcd_eth1="-R -h CP179741-A"

routes_eth1=( "84.29.178.0 netmask 255.255.254.0 via 84.29.178.1" )

Could this be caused by the fact that there alreay are routes with gateway 84.29.178.1 or with destination 84.29.178.0?
route -n

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Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         84.29.178.1     0.0.0.0         UG    0      0        0 eth1

bassvandijk · Post by **bassvandijk** » Tue Aug 30, 2005 10:43 am

I just figured out (by looking at the net.lo source) that I need to specify it as:

Code: Select all

routes_eth1=( "84.29.178.0/23 via 84.29.178.1" )

However, now my routing table is:

Code: Select all

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
84.29.178.0     84.29.178.1     255.255.254.0   UG    0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         84.29.178.1     0.0.0.0         UG    0      0        0 eth1

I think this will give problems because the newly added route comes after this route:

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84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1

So packages with destination 84.29.178.0/23 won't go via the gw but will be sent directly.

How do I get the route to be "above" this route, just like when I add them manuallly?

UberLord · Post by **UberLord** » Tue Aug 30, 2005 11:21 am

baselayout-1.12.0_pre7 will allow net-tools route style commands (using the netmask bit) to work with iproute2 which fixes the bug.

As to the routing problem, I'm not too sure what a viable solution is as they would probably block at their end.

bassvandijk · Post by **bassvandijk** » Tue Aug 30, 2005 11:53 am

I was thinking,
who adds all those routes? Well obviously it's dhcpcd, so lets disable that by adding -G to dhcpcd:

man dhcpcd

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...
-G [gateway]
Prevents  dhcpcd from installing default routes provided by DHCP server.  If optional gateway ip address parameter is supplied then use it for default route.
...

After restarting net.eth1, my routing table is:

Code: Select all

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
84.29.178.0     84.29.178.1     255.255.254.0   UG    0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo

Well, the default route is gone but there's still this strange route

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84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1

Who is adding that route and how can I disable that?

BTW Thanks for all your replies so far

UberLord · Post by **UberLord** » Tue Aug 30, 2005 11:57 am

bassvandijk wrote:Well, the default route is gone but there's still this strange route
Code: Select all
84.29.178.0     0.0.0.0         255.255.254.0   U     0      0        0 eth1
Who is adding that route and how can I disable that?

You can't - that's added by the kernel based on the netmask.
You could manually delete it in a postup() function though.

bassvandijk · Post by **bassvandijk** » Tue Aug 30, 2005 12:15 pm

UberLord wrote:...You could manually delete it in a postup() function though.

Great tip! It works now with this /etc/conf.d/net:

Code: Select all

# eth0 = LAN
# eth1 = Internet

config_eth0=("192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255")

config_eth1="dhcp"
dhcpcd_eth1="-R -h CP179741-A"

routes_eth1=( "84.29.178.0/23 via 84.29.178.1" )

postup()
{
        route del -net 84.29.178.0 netmask 255.255.254.0
        return 0
}

Thanks for all the help!

zomps · Post by **zomps** » Tue Aug 30, 2005 2:18 pm

routes_eth0=(
"-net 192.168.0.0/24 via 192.168.1.1"
"-host 192.168.2.1 via 192.168.1.1"
)

dl7und · Post by **dl7und** » Thu Dec 15, 2005 7:05 am

Thanks zomps! Your example finally put me on the right path.

[SOLVED] HOWTO add routes using /etc/conf.d/net

[SOLVED] HOWTO add routes using /etc/conf.d/net

Re: HOWTO add routes using /etc/conf.d/net

Re: HOWTO add routes using /etc/conf.d/net