I need to merge two L2 broadcast domain into single domain and I have to do this over unmanaged by me L3 IP network.
All that I could find is vtun utility for linux.
Which software&howto you can suggest?
Thank you in advance.
Create a VPN between the two networks. Use brctl
to bridge the vpn and ethernet interfaces on each side.
What type of connections are you trying to merge? Is this for two directly attached networks (say a multihomed Linux box) or is this two remote networks?
You might check out L2TP (Layer 2 tunneling protocol) which is commonly used with IPSec VPNs
http://www.jacco2.dds.nl/networking/freeswan-l2tp.html
http://linuxexplore.com/how-tos/l2tp-vpn-using-xl2tpd/
-jkm