Feature Description
AMF supports a single SCTP pod (single instance) for SCTP multihoming, where the SCTP stack comes up with a list of supported host IPs. As part of the association formation, the association ID corresponds to the list of IPs, instead of a single IP.
The stack also supports multihoming for one-to-many and many-to-many connections. This support continues until any of IPs are available on either side of the SCTP end points (AMF and gNB). At the same time, traffic over multiple IPs is also possible.
The following figure represents the support structure for SCTP Multihoming:

Based on the represented figure, the following SCTP associations are formed:
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Association ID – 0 [{IP1, IP2}, {IP4, IP5}]
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Association ID – 1 [{IP1, IP2}, {IP3}]