strongswan-charon - 5.9.13-2+b1 main

The strongSwan VPN suite uses the native IPsec stack in the standard
Linux kernel. It supports both the IKEv1 and IKEv2 protocols.
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charon is an IPsec IKEv2 daemon which can act as an initiator or a responder.
It is written from scratch using a fully multi-threaded design and a modular
architecture. Various plugins can provide additional functionality.