ovpn_peer_del
ret = ovpn_peer_del(peer, OVPN_DEL_PEER_REASON_USERSPACE);
int ovpn_peer_del(struct ovpn_peer *peer, enum ovpn_del_peer_reason reason);
ovpn_peer_del(peer, OVPN_DEL_PEER_REASON_TRANSPORT_ERROR);
ovpn_peer_del(sock->peer, OVPN_DEL_PEER_REASON_TRANSPORT_DISCONNECT);