Function dhcpv6_client_prefix_valid_until

pub unsafe extern "C" fn dhcpv6_client_prefix_valid_until(
    netif: c_uint,
    pfx: *const ipv6_addr_t,
    pfx_len: c_uint,
) -> u32

@brief Determines how long the prefix delegation lease is still valid.

@param[in] netif Network interface the prefix delegation was for. @param[in] pfx Prefix of the prefix delegation @param[in] pfx_len Length of @p pfx in bits.

@return Remaining valid lifetime of the prefix delegation lease in seconds.