Seems like that vpp/src/plugin/cnat can support sctp,

commit f284c14c7bd8731367ba3527cdfffa610a8c6de4
Author: Nathan Skrzypczak 
nathan.skrzypc...@gmail.com<mailto:nathan.skrzypc...@gmail.com>
Date:   Wed Feb 2 19:31:58 2022 +0100

    cnat: Add sctp support

    This patch adds SCTP support in the CNat translation primitives.
    It also exposes a clib_crc32c_with_init function allowing to set
    the init value to start the crc32 with instead of 0.

    Type: feature

    Change-Id: I86add4cfcac08f2a5a34d1e1841122fafd349fe7
Signed-off-by: Nathan Skrzypczak 
nathan.skrzypc...@gmail.com<mailto:nathan.skrzypc...@gmail.com>
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Christopher Adigun
Sent: Thursday, December 29, 2022 4:00 PM
To: vpp-dev <vpp-dev@lists.fd.io>
Subject: [vpp-dev] LoadBalancer SCTP Support

Hi,

Please, I will like to know if VPP can be used as an SCTP loadbalancer.

I could not find much reference about this..

Checking the help options for the lb command shows only tcp/udp

vpp#
vpp# lb ?
  lb as                                    lb as <vip-prefix> [protocol 
(tcp|udp) port <n>] [<address> [<address> [...]]] [del] [flush]
  lb conf                                  lb conf [ip4-src-address <addr>] 
[ip6-src-address <addr>] [buckets <n>] [timeout <s>]
  lb flush vip                             lb flush vip <prefix> [protocol 
(tcp|udp) port <n>]
  lb set interface nat4                    lb set interface nat4 in <intfc> 
[del]
  lb set interface nat6                    lb set interface nat6 in <intfc> 
[del]
  lb vip                                   lb vip <prefix> [protocol (tcp|udp) 
port <n>] [encap (gre6|gre4|l3dsr|nat4|nat6)] [dscp <n>] [type 
(nodeport|clusterip) target_port <n>] [new_len <n>] [del]


If yes, kindly share documentation reference (or sample config if possible).

Thanks
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