[strongSwan] Can StrongSwan be loadbalanced?

[Houman]

Hello,

I have made quite a bit of research on how to load balance StrongSwan,
however, I get contradicting messages.

e.g. from my understanding, StrongSwan (IKEv2) works over UDP and not TCP.
Hence Aws load balancer is out of the question.  But so is HAProxy !!!

But I discovered that latest NGINX 1.10+ supports UDP load balancing and it
was easy to set it up.

I am currently listening to ports 500 and 4500 and it doesn't quite work. I
have raised an issue here: https://wiki.strongswan.org/issues/2464

Do I need to listen to port 50 and 51 as well?

Any tips or advice for me, please?
Many Thanks,
Houman
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