SCTP Traffic getting dropped

I have a use space sctp application running in a container (pod) which uses raw socket. Now i want to expose my userspace sctp application to external networks using Nodeport. I am using latest kubernetes 1.13.1 with calico. But the packets are not getting forwarded from host to the container. Packets are getting dropped at host only. Any help would be appreciated.

Regards,
Himani