On Tue, May 17 2011 at 39:21, patrick.oesch...@bluewin.ch wrote:
> ...gives me some headache...
> 
> system1: (openbsd 4.9)
> em0 192.168.1.54 (same /24 subnet as system2)
> /etc/isakmpd/isakmpd.
> conf:
> Listen-on=      192.168.1.54
> isakmpd -K
> 
> system2: (openbsd 4.9)
> em0 192.168.1.200 (same /24 subnet as system1)
> 
> /etc/isakmpd/isakmpd.conf
> Listen-on=      192.168.1.200
> isakmpd -K
> 
> as long as em0 on system2 is in rdomain 0 (zero) 
> everything seems fine and using tcpdump i can see bi-directional traffic on 
> UDP/500
> as soon as i put em0 on system2 
> into rdomain 1 using 'ifconfig em0 192.168.1.200 rdomain 1' my headache 
> starts...
Did you run isakmpd on rdomain 1? (as precised in another mail)
route -T1 exec isakmpd -K

The second step would be more problematic, I dont think that enc(4) 
supports rdomain yet.

[...]

> anybody having experience in 
> terminating a IPSEC tunnel in a routing domain? (virtual firewall setup)
> maybe i should try GRE with IPSEC on top of 
> that...(?)
Setting up gif on rdomain on top of ipsec works.

Hope this helps :)

Claer

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