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MULTIPLE_EXTERNAL_IP support "netmap"

 
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toto



Joined: 08 Feb 2016
Posts: 3

PostPosted: Mon Feb 08, 2016 11:14 pm    Post subject: MULTIPLE_EXTERNAL_IP support "netmap" Reply with quote

listening_ip=192.168.1.1/24 10.10.10.1/24
listening_ip=192.168.2.1/24 10.10.10.1/24
listening_ip=192.168.3.1/24 10.10.10.1/24

thx
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miniupnp
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Joined: 14 Apr 2007
Posts: 1429

PostPosted: Tue Feb 09, 2016 8:19 am    Post subject: Reply with quote

I don't understand...
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toto



Joined: 08 Feb 2016
Posts: 3

PostPosted: Tue Feb 09, 2016 12:30 pm    Post subject: Reply with quote

sorry =]

iptables get netmap:
http://www.netfilter.org/documentation/HOWTO/netfilter-extensions-HOWTO-4.html#ss4.4

"that allows you create a static 1:1 mapping of the network address, while keeping host addresses intact.

For example, if you want to alter the destination of incoming connections from 1.2.3.0/24 to 5.6.7.0/24, you can do as follows :

# iptables -t nat -A PREROUTING -d 1.2.3.0/24 -j NETMAP --to 5.6.7.0/24
"
As I see, miniupnpd only support many to one ip.
Wanna many to many.
All 'one' bits in the mask are filled in from the new 'address'. All bits that are zero in the mask are filled in from the original address.
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miniupnp
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PostPosted: Tue Feb 09, 2016 1:38 pm    Post subject: Reply with quote

OK. I don't see how to support that with UPnP IGD...
you don't need UPNP for that anyway.
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toto



Joined: 08 Feb 2016
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PostPosted: Tue Feb 09, 2016 2:40 pm    Post subject: Reply with quote

I need to improve my english =/

You don't need support iptables netmap in UPnP IGD.
Only the logic.
In miniupnpd.c,
* When MULTIPLE_EXTERNAL_IP is enabled, the ip address of the
* external interface associated with the lan subnet follows.
* ex : 192.168.1.1/24 81.21.41.11

but if we get more then one ip address in the external interface.
For example - 255, than:
192.168.1.1/24 81.21.41.1/24
and ip 192.168.1.40 will be out in 81.21.41.40, not 81.21.41.1

thx
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miniupnp
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PostPosted: Tue Feb 09, 2016 3:33 pm    Post subject: Reply with quote

What's the point ?

Why do you need UPnP IGD with such setup ?
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