[strongSwan] Question on sending "INTERNAL_IP4_SUBNET" in CFG

Andreas Steffen andreas.steffen at strongswan.org
Thu Aug 4 11:13:59 CEST 2011

Hi Nan,

for requesting and handling INTERNAL_IP4_SUBNET attributes
you could write a libhydra plugin of your own, closely modeled
after the existing resolve plugin


which registers and handles IP4_DNS and IP6_DNS attributes
by storing them in /etc/resolv.conf.

Currently a strongSwan client doesn't know what to do with a
INTERNAL_IP4_SUBNET attribute, therefore it doesn't request one.

Best regards


On 04.08.2011 00:22, Nan Luo wrote:
> Hi,
> Can strongSwan (as client) send INTERNAL_IP4_SUBNET in Configuration
> Payload? How to configure it?
> Thanks very much for your help
> Nan
> --- On *Fri, 6/24/11, Nan Luo /<harvana2000 at yahoo.com>/* wrote:
>     From: Nan Luo <harvana2000 at yahoo.com>
>     Subject: [strongSwan] Question on sending "INTERNAL_IP4_DNS" in CFG
>     To: users at lists.strongswan.org
>     Date: Friday, June 24, 2011, 3:11 PM
>     Hi,
>     I am testing a SeGW with strongSwan as the client. I am trying to
>     have strongSwan sending multiple attributes ("INTERNAL_IP4_ADDRESS"
>     and "INTERNAL_IP4_DNS") in the Configuration payload to my SeGW, but
>     strongSwan always includes only one attribute
>     ("INTERNAL_IP4_ADDRESS"), any configuration I am missing here? I
>     remember strongSwan used to be able to send multiple. I am using
>     srtongSwan 4.5.0  

Andreas Steffen                         andreas.steffen at strongswan.org
strongSwan - the Linux VPN Solution!                www.strongswan.org
Institute for Internet Technologies and Applications
University of Applied Sciences Rapperswil
CH-8640 Rapperswil (Switzerland)

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