Thanks to the community contributor leoric, now SFEopenvpn.spec (alias system/network/openvpn has a patch that helps finding the default gateway when running on a SunOS Kernel.

If you have a chance to try out the server and / or the client side, then please let us know in the commets section or on any other way you may find out to contact us.

As well, the package has got a bump up to version 2.3.6.

The following binary repositories are pupulated with the new package now:
Omnios OI151a8 and OI151a9:
http://sfe.opencsw.org/localhostoi151a8
S11:
http://sfe.opencsw.org/localhosts11
S12:
http://sfe.opencsw.org/localhosts12
OmniOS:
http://sfe.opencsw.org/localhostomnios