DATAPUISTOKEMISTI

Often it's not necessary to encrypt traffic when tunneling L2 network over L3 in corporate environment. I hear, you say use OpenVPN, tinc, gvpe, n2n etc. Now, did you know that there's easy built-in solution that has been part of Linux kernel since 2.6.29? If you need encryption just use IPsec to protect GRE traffic.

These are kind of "last resort" fixes if all normal ways fail to resolve problem. No guarantees. Worked for me...

It turned out to be just like I suspected , Planet WNAP-7300 (at least with firmware "2.0.3(PL)4") is exactly same device as Zcomax ZCN-1523H-5. Atheros AR7240 rev. 2 at 350MHz, Atheros AR9280 rev 2 5GHz radio, 32MB RAM, 8MB Flash and two 10/100 Ethernet ports. Therefore it works with Zcomax OpenWrt firmware. Bridge performance seems acceptable, around 70Mbit/s real world in bridged mode and 60Mbit/s if OpenWrt is doing NAT. With around 25 meters nearly line-of-sight performance is ~40Mbit/s. All tests uni-directional TCP (FTP/HTTP) with no other traffic than ICMP echo going on at the same time.

Didn't see this documented anywhere so here it is. How to use Finnish dy.fi dynamic DNS service with OpenWrt router.

Host system configuration: Intel Core2Duo 6300 w/VT CentOS 5.7 x64 VMware Workstation 8.0.1

For some reason latest Strongswan version for Ubuntu is still 4.5.1. See below how to compile and package latest 4.6.2dr3. Not pretty, but works for me when testing new version.

As OpenWrt Wiki lacks this particular example (there's other L2TPv3 examples) I guess better I document it somewhere.