vxlan and/or otv users out there?

[Jean-Yves Migeon <jym%NetBSD.org@localhost>]

Dear list,

I know that this question is not NetBSD specific per see, but I am aware 
that some of you out there have implemented and used vxlan-like 
technologies to extend networks at L2. Some have worked on it with rump 
[1].

$DAYJOB is currently investigating using these kind of technologies 
(mostly: vxlan or otv) to extent "seamlessly" L2 networks between two 
"zones", but as I have never used such protocols I am bit at a loss 
here, especially on the administrativia stuff.

If any of you used or use it and is willing to share (privately or not) 
his opinion on these, I will gladly take it, especially for things at a 
larger scale than what I could achieve on my small test bench. I am bit 
wary of L2 extension protocols when it regards scalability of the 
infrastructure, specifically for large networks (I guess that an 
alternative to STP needs to be used here?).

Thanks :)

[1] 
https://www.netbsd.org/gallery/presentations/goda/2015_AsiaBSDCon/development_of_vxlan_using_rumpkernel.pdf

--
Jean-Yves Migeon